NASHUA -- All public schools in Nashua are closed Monday because of a threat of violence made to both city high schools, according to police.“We are really working from the perspective of caution,” Superintendent Mark Conrad told the New Hampshire Union Leader Sunday evening. “The Nashua Police Department is doing a great job -- they are working very hard to determine as much as they can.”Since police could not rule out that the threat was credible, Conrad said it was best to err on the side of caution and be able to reassure parents that their children are safe. The FBI is assisting in the investigation, according to a release from the governor.“We have received a detailed threat of violence to harm students and staff at both high schools,” Conrad said in a statement, adding the threat was targeted for Monday. “Because the threat is specific and extends to several schools, we will be cautious and close all of our public schools in Nashua (on Monday).”He explained that a school administrator received the threat, describing the level of detail in the threat as “especially concerning.”Automatic calls were being made to parents of the school district Sunday evening, notifying them of the threat and the cancellation. All after-school events have also been canceled.Nashua police said they received notification from the school district about a specific threat of violence directed towards both Nashua public high schools, police said in a statement issued about 6:30 p.m. on Sunday.According to the release, city police are working with the Nashua School District administration and several state and federal law enforcement agencies to determine the credibility of the threat.“At this time, the investigation remains open and ongoing,” said police.Conrad apologized to parents for the inconvenience, stressing that “safety must remain our first priority.” He expects school to be back in session on Tuesday.Kimberly Kleiner, a member of the Nashua Board of Education, said she has complete faith in the Nashua police force, and is confident they are taking the threat seriously and will solve the matter promptly.“I am a parent -- my daughter is a junior -- and like most parents, this is scary. Unfortunately, this is the world we live in,” Kleiner said on Sunday night. “I think Superintendent Conrad made the correct move in speaking with the chief. I support his decision in putting the safety of our children first.”Noting the school threats recently made in California and New York, Kleiner said it is unfortunate and sad that these incidents continue to disrupt the education of children. There will be 12,000 Nashua students not in the classroom on Monday, she explained.“We don't want mass hysteria, and we don't want parents to feel uncomfortable,” said Kleiner. “I feel for every Nashua parent out there tonight. It is concerning.”Kleiner said she spoke with her daughter about the threat, and said her child understands the situation and believes there is likely nothing behind the threat, but also understands that police and school officials must do their due diligence for the safety of everyone involved."Public safety is any government's most important responsibility -- especially at our schools -- and we are closely monitoring the situation in Nashua. I have been in contact with Mayor (Donnalee) Lozeau and the emergency operations center, and the State Police and state emergency management officials are working closely with the Nashua Police Department, local public safety officials and the FBI," Governor Maggie Hassan said in a statement. "We will continue to monitor the situation and work together at the state, local and federal levels to investigate the threat and keep our communities safe."khoughton@newstote.com ||||| Nashua schools are closed Monday amid a threat of violence. 
 
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 The Nashua School District contacted Nashua police after receiving a threatening email. 
 
 Superintendent Mark Conrad said the threat stated "that there would be an action taken [Monday] to hurt students." 
 
 Watch: Nashua Police Department holds press conference on school threats 
 
 
 
 [The threat] had specific directions toward the two Nashua high schools with specific threats of violence, which is why we are taking it kind of seriously," said Lt. Kerry Baxter. 
 
 Police did not release further details about what the threat said. 
 
 "They haven't been able to determine at this time whether or not the threat is credible, and since they can't rule out that it is a credible threat, we decided to take the cautious course of action and close all our schools for tomorrow," said Conrad. 
 
 At about 6:15 p.m., the school district sent 14,000 automated phone calls to parents to inform them of the closure. More than 11,400 students, teachers and staff at the city's 17 schools will not have class Monday. 
 
 "It's a tough decision to make, you know. These seem to be going around the country. They seem to be happening more frequently and they are very disruptive on many different levels," said Baxter. 
 
 Conrad announced the closure on the Nashua School District website. 
 
 "We have received a detailed threat of violence to harm students and staff at both high schools," Conrad wrote. "The threat is specific to tomorrow (Monday). We have been working closely with the Nashua Police Department, which is still working at this time (Sunday) to determine the credibility of the threat." 
 
 The statement goes on to say, "Because the threat is specific and extends to several schools, we will be cautious and close all of our public schools in Nashua tomorrow, Monday, December 21st. I do expect our schools to reopen on Tuesday. I regret any difficulties this creates for working parents but safety must remain our first priority." 
 
 A state police bomb squad was at Nashua High School North on Sunday night. 
 
 "Any time you have a threat directed towards a school, it doesn't hurt to bring in additional [security] as a precaution," said Baxter. 
 
 Some parents were worried about the threat, as well as sending their kids back to school on Tuesday. 
 
 "As a parent... it scares me because I don't want to send my kids to school and not have them come back home to me," said Barbara Lao. "Whether we should send our kids to school, that is the question, or just keep them home with us?" 
 
 Parents said they don't know what to say to their children. 
 
 "He asked me why there is no school, and I said there was a threat. And he asked me, 'What is the threat about?'" said Angelin Fernandez. "And I don't know what to answer. 
 
 
 
 "I said, 'Honey, there is no school tomorrow,'" Fernandez said. "She said, 'Mommy, are we going to get killed?'" 
 
 New Hampshire Homeland Security and Emergency Management said it is working with Nashua and federal officials to provide the best information to the public. 
 
 The FBI also said it is is aware of the threat and is assisting the Nashua Police Department in the investigation. 
 
 "Public safety is any government's most important responsibility -- especially at our schools -- and we are closely monitoring the situation in Nashua. I have been in contact with Mayor Lozeau and the emergency operations center, and the State Police and state emergency management officials are working closely with the Nashua Police Department, local public safety officials and the FBI. We will continue to monitor the situation and work together at the state, local and federal levels to investigate the threat and keep our communities safe," said Gov. Maggie Hassan. 
 
 Director of Homeland Security and Emergency Management Perry Plummer said there have been no credible threats outside of Nashua. Plummer said there's no reason to think that any other schools in the state should be concerned at this time. 
 
 "Certainly all threats have to be taken seriously until proven otherwise but at this point, the good news is that we don’t feel as though this is any threat to any other schools other than the ones that were mentioned by Nashua," said Plummer. 
 
 
 
 Administrators told News 9 that St. Christopher School and Nashua Catholic Junior High School will also be closed Monday.
– All public schools in Nashua, NH, will be closed Monday after what Superintendent Mark Conrad describes as a "detailed threat of violence to harm students and staff" at both of the city's high schools. The school district made 14,000 automated phone calls Sunday evening to inform parents of the closure, WMUR reports. "I regret any difficulties this creates for working parents but safety must remain our first priority," Conrad, who expects schools to reopen on Tuesday, said in a statement. Gov. Maggie Hassan says state officials are working closely with Nashua police and the FBI, per WMUR. "We are really working from the perspective of caution," the superintendent tells the New Hampshire Union Leader, adding that police are doing a "great job" in trying to determine where the threat came from and whether it's credible. He says the amount of detail in the threat, which was received by a school administrator, is "especially concerning." It's not clear whether the New Hampshire threat is linked to those that were received by school districts across the country and shut down all Los Angeles-area schools for a day last week. Those threats have been traced to an email service that doesn't keep any information on users.