PARIS (AP) — France on Monday ordered 10,000 troops into the streets to protect sensitive sites after three days of bloodshed and terror, amid the hunt for accomplices to the attacks that left 17 people and the three gunmen dead. 
 
 People wave national flags and hold placards that read "I am Charlie" at the Place de la Nation in Paris, France, Sunday, Jan. 11, 2015. More than 40 world leaders, their arms linked, marched through... (Associated Press) 
 
 A man holds up a placard that reads "I am Charlie" at the Place de la Nation in Paris Sunday, Jan. 11, 2015. More than 40 world leaders, their arms linked, marched through Paris Sunday to rally for unity... (Associated Press) 
 
 A girl holds up a placard that reads "I am Charlie" in several languages at the Place de la Nation in Paris Sunday, Jan. 11, 2015. More than 40 world leaders, their arms linked, marched through Paris... (Associated Press) 
 
 FILE - This photo provided by the Paris Police Prefecture Friday, Jan. 9, 2015 shows Hayat Boumedienne the suspect in the kosher market attack. Turkey's foreign minister said Monday Jan.12, 2015 that... (Associated Press) 
 
 Prime Minister Manuel Valls said the search is urgent because "the threat is still present" after the attacks that began Wednesday with a massacre on the satirical newspaper Charlie Hebdo and ended when the three attackers were killed Friday in nearly simultaneous raids by security forces. 
 
 Meanwhile, France's defense minister said Monday the country is mobilizing 10,000 troops to protect the population. Jean-Yves Le Drian said the deployment will be fully in place by Tuesday, and will focus on the most sensitive locations. 
 
 Interior Minister Bernard Cazeneuve said 4,700 security forces would be assigned to protect France's 717 Jewish schools. 
 
 The common-law wife of one of the attackers crossed into Syria on Thursday, the day after the Charlie Hebdo massacre, and the same day her husband shot a policewoman to death on the outskirts of Paris, according to Turkey's foreign minister. 
 
 Mevlut Cavusoglu told the state-run Anadolu Agency on Monday that Hayat Boumedienne arrived in Turkey from Madrid on Jan. 2, ahead of the attacks and stayed at a hotel in Istanbul with another person before crossing into Syria on Thursday. 
 
 Video emerged on Sunday of her husband, Amedy Coulibaly, explaining how the attacks would unfold. Police want to find the person who shot and posted the video which was edited after the attacks were over. 
 
 "The work on these attacks, on these terrorist and barbaric acts continues ... because we consider that there are most probably some possible accomplices," Valls told BFM television. 
 
 Turkish intelligence tracked Boumeddiene from her arrival on Jan. 2. She and her traveling companion, a 23-year-old man, toured Istanbul, then left Jan. 4 for a town near the Turkish border, according to a Turkish intelligence official, who was not authorized to speak on the record. 
 
 Her last phone signal was on Jan. 8 from the border town of Akcakale, where she crossed over apparently into Islamic State-controlled territory. Their Jan. 9 return tickets to Madrid went unused 
 
 Survivors say the Charlie Hebdo attackers, brothers from Paris, claimed they were from al-Qaida in Yemen, the group the U.S. considers the most dangerous offshoot of that network. In the video, Coulibaly pledges allegiance to the Islamic State group. 
 
 Ties among the men date back to at least 2005, when Coulibaly and Cherif Kouachi were jailed together. It later emerged that Cherif's older brother, Said, fought with or was trained by al-Qaida in Yemen; Cherif, was convicted in 2008 along with several others in a network that sent jihadis to fight American forces in Iraq. 
 
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 Associated Press writers John-Thor Dahlburg in Paris; Suzan Fraser in Ankara, Turkey; and Desmond O. Butler in Istanbul contributed. ||||| A sign reads in French, "We are Charlie. Freedom of Expression," on flowers in front of the offices of the satirical newspaper Charlie Hebdo in Paris on Saturday. 
 
 A sign reads in French, "We are Charlie. Freedom of Expression," on flowers in front of the offices of the satirical newspaper Charlie Hebdo in Paris on Saturday. Reuters 
 
 PARIS—French authorities believe Hayat Boumeddiene, the girlfriend of the gunman who was killed during a police raid at a kosher store on Friday, left France Jan. 2 and has reached Syria, people familiar with the matter said Saturday. 
 
 Police have been hunting for Ms. Boumeddiene since her partner, Amedy Coulibaly, was identified as the alleged shooter of a policewoman on Thursday and stormed a Parisian kosher grocery on Friday, leaving four hostages dead. 
 
 French prosecutors have described Ms. Boumeddiene as a dangerous individual who has trained to use firearms. 
 
 Related Video French officials continued to search for Hayat Boumeddiene, the girlfriend of one of the Paris attackers. Sources now say she could be in Syria. Photo/Video: AP 
 
 Ms. Boumeddiene left France and crossed into Syria from Turkey, the people said, before the French capital was plunged into a three-day spree of violence that began with the attack on the Charlie Hebdo magazine Wednesday. 
 
 A senior Turkish official said Ms. Boumeddiene flew to Turkey with one companion on Jan. 2, landing at Istanbul’s Sabiha Gokcen airport. The official would not name her travel companion but said Turkish intelligence officials were in constant contact with their French counterparts. 
 
 The pair stayed in Istanbul until Jan. 4, when they flew to the southeastern city of Urfa, and most likely headed to Syria, the official said. 
 
 “After Urfa, we lost track of them... most likely they crossed into Syria,” the official said. 
 
 “She used no ports or no vehicles to exit turkey that we know of,” he added. 
 
 The city of Urfa is known as a way station for foreigners seeking to reach the Syrian battlefield. 
 
 It isn’t clear whether Ms. Boumeddiene went to Syria to join one of the radical Islamist groups fighting in the bloody civil war. 
 
 In an interview with French news channel BFM TV on Friday, before he was killed by police, Mr. Coulibaly said he had acted on behalf of Islamic State, the insurgency that controls large swaths of Syria and Iraq. 
 
 The French Justice Ministry on Friday issued a wanted notice for Ms. Boumeddiene and Mr. Coulibaly in connection with the murder of a policewoman near Paris on Thursday and the attack Wednesday on Charlie Hebdo. 
 
 But the authorities said late Friday that there was no indication Ms. Boumeddiene was present at the grocery store siege after some media reports had said she was with Mr. Coulibaly at the time. 
 
 The wanted notice included a photograph of Ms. Boumeddiene with her face and hair exposed but other images purported to be of her, reprinted widely in French media, show a woman clad from head to toe in a black robe and face covering. In some of the images, shown alongside photos of Mr. Coulibaly apparently at the same forested location, the woman is shown firing a weapon resembling a crossbow. 
 
 On a French Internet forum in November about a French law forbidding head scarves worn by many Muslim woman, a person signing herself as Hayat Boumeddiene attacked the French law and said Islamic law took precedence. Links between the entry and the wanted woman couldn’t be established. 
 
 Ms. Boumeddiene, 26 years old, was one of seven children who grew up in an economically depressed Parisian suburb, according French media. Her mother died when she was 6, her father struggled to support his family and Ms. Boumeddiene was put in the custody of French social services, according to the French daily Le Parisien. Attempts to reach Ms. Boumeddiene’s father were unsuccessful. 
 
 Ms. Boumeddiene later became romantically involved with Mr. Coulibaly and the two in 2009 held a religious wedding ceremony, according to Le Parisien. They weren’t married in a civil ceremony so weren’t considered legally married. 
 
 Ms. Boumeddiene had been in “constant and sustained” contact with Chérif Kouachi’s wife, exchanging more than 500 phone calls last year, Paris prosecutor Francois Molins said Friday. Mr. Kouachi’s wife was taken into custody on Wednesday, prosecutors said. 
 
 Write to Daniel Michaels at daniel.michaels@wsj.com and Stacy Meichtry at stacy.meichtry@wsj.com ||||| French Prime Minister Manuel Valls told France's BFM TV on Monday that there was "without a doubt" at least one accomplice to the deadly attacks in Paris and vowed that "the hunt will go on." It was not clear whether he was talking about Boumeddiene or an additional suspect. 
 
 Turkish foreign minister told Anadoluthe country's intelligence services tracked Boumedienne from her arrival in the country on Jan. 2. 
 
 French officials also alerted the Turkish government that Boumedienne had traveled to Turkey with a companion named as Mehdi Sabri Belhoucine, an official close to the investigation and a member of the police told NBC News on Monday. 
 
 Turkish intelligence then tracked Boumedienne via her cellphone and listened to her conversations, discovering that she had arrived in Istanbul’s Sabiha Gokcen International Airport stayed on the Asian side of the city, the sources said. CCTV video from the airport emerged on Monday that officials say shows the duo at the airport's passport control office. 
 
 Boumedienne and Belhoucine stayed at Bade Otel, a small and relatively cheap hotel in a middle-class neighborhood,the Turkish police source said. During their time in Istanbul, the two moved around the city like tourists and did nothing to arouse officials’ suspicions, the Turkish sources added. 
 
 Intelligence officials followed her telephone signals until she and Belhoucine went to the Turkish city of Sanliurfa near the border with Syria on Thursday, after which they lost track of the pair, they added. The discrepancy between the foreign minister's comments and the sources account could not immediately be explained. 
 
 Boumedienne's common-law husband Amedy Coulibaly is believed to have killed a French policewoman on Thursday, the day before he killed four hostages at a kosher supermarket. Police have described her as an accomplice in the officer's killing. 
 
 Video emerged Sunday purporting to show Coulibaly pledging allegiance to ISIS and defending the attacks on satirical magazine Charlie Hebdo. A man who looks like Coulibaly is shown exercising, with a gun and giving speeches with an ISIS banner. The SITE Intelligence Group said it had verified the video. 
 
 The Associated Press contributed to this report.
– The 26-year-old woman sought by French police as the widow and potential accomplice of Paris deli shooter Amedy Coulibaly is in Syria, Turkey's foreign minister confirmed today. The timeline that Mevlut Cavusoglu is offering up indicates that Hayat Boumeddiene crossed over into Syria after Wednesday's slaughter at Charlie Hebdo, but potentially before her husband's killing spree began: Citing "telephone recordings," Cavusoglu says that Boumeddiene flew from Madrid to Turkey on Jan. 2, then entered Syria on Thursday, reports NBC News—the day her common-law husband is accused of killing a French policewoman. "We provided [French authorities] with the information as soon as we got it, without them even asking," he says. Germany, at least, is unimpressed; its domestic spy chief said today that Turkey is a "key country" that needs to do more to stem the tide of radicals crossing through it into Syria, USA Today reports. It's estimated that north of 90% of extremists headed to Syria cross through Turkey. France confirmed today that it's still seeking at least one probable accomplice, with PM Manuel Valls saying that "the threat is still present" and "the hunt will go on." The AP has more on Boumeddiene's movements: She apparently stayed at an Istanbul hotel with an unnamed 23-year-old man before heading for Turkey's border with Syria. Her last cell transmission came from a border town on Thursday, and she apparently crossed over into ISIS-controlled territory. Meanwhile, video emerged yesterday of Coulibaly declaring his allegiance to ISIS.