 Suspect named as Yassin Sahli arrested after man seemingly tried to blow up factory by crashing a vehicle into warehouse containing gas canisters 
 
 France has raised its security alert to the highest level after police discovered a decapitated body and flags with Arabic inscriptions following an attack in which a man seemingly tried to blow up a factory belonging to a US gas company. A suspect arrested at the scene at Saint-Quentin-Fallavier, near Lyon in south-west France, was named by the French prosecutor as 35-year-old Yassin Salhi, an employee at a transport company run by the victim. "The head was discovered hanging on the factory's wire fence, framed by two flags that included references to the shahada, or (Muslim) profession of faith," Paris public prosecutor Francois Molins told a news conference. "There is no other link other than to say that terrorism is our common enemy," said President Francois Hollande, returning to Paris from an EU summit in Brussels. France’s interior minister, Bernard Cazeneuve, said Sahli had previously faced investigation over radicalisation, although he had no police record. Facebook Twitter Pinterest France will not give in to fear, says French president François Hollande 
 
 Hollande led a security meeting at the Elysée palace, saying afterwards he had raised the security alert in the south-east region to maximum. Earlier, a woman identifying herself as Sahli’s wife told Europe 1 radio that she and the couple’s three children had known nothing of the planned attack. “My heart is about to give out,” she said. The suspect was believed to have hung his manager’s head on a fence before driving a vehicle into a warehouse filled with gas canisters, causing an explosion, a local newspaper, Dauphiné Libéré, said. The attacker was injured in the blast and arrested on the site. Because his vehicle was authorized to make deliveries, it was allowed through the gates. The site of Friday's attack belonged to Air Products, a U.S. industrial gases and chemicals company. When emergency services arrived a few minutes later, they found the headless body of the victim by the van and a knife nearby. Our crisis and emergency response teams have been activated and are working closely with all relevant authorities.” 
 
 France has been on alert for possible Islamist-related attacks since gunmen killed 17 people in January in assaults on the offices of the Charlie Hebdo satirical magazine and a Jewish food store. In April, Prime Minister Manuel Valls said no fewer than five attacks had been thwarted in the country since then.
– Yesterday's attack on a gas plant in Saint-Quentin-Fallavier, France, was made all the more gruesome by the revelation that a severed head was found hanging from the factory's wire fence along with banners with Arabic inscriptions. That head belonged to the alleged attacker's boss, reports Reuters. French officials have named the suspect, who is in custody, as Yassin Sahli; he is a 35-year-old delivery driver, and police say the head found on the fence was that of his 54-year-old boss. The Guardian reports the remainder of the man's body was discovered inside the factory. Reuters reports that the delivery van had the authorization to enter the site, and prosecutors say Sahli made regular deliveries to the US-owned Air Products factory. After the van passed through the main gates it was filmed speeding up as it barreled toward the warehouse. Sahli was "overpowered" as he tried to open canisters containing a flammable liquid, per Reuters. No one has claimed responsibility for the attack, and as the Guardian puts it, "It remained unclear whether any Islamist motivation for the attack might be mixed with personal grudges."