Schools in nearly a half dozen communities around the state were evacuated Monday after bomb threats were called in – and New Hampshire isn’t alone.

Advertisement String of bomb threats received at multiple New Hampshire schools Schools in Portsmouth, Berlin, Keene, Nashua report bomb threats, officials say Share Shares Copy Link Copy

Schools in nearly a half-dozen communities around the state were evacuated Monday after bomb threats were called in – and New Hampshire isn’t alone.Click to watch News 9's coverage.Robo-calls reached schools in Massachusetts, Colorado, Delaware, Minnesota, Utah and Wisconsin as well. There are even reports of more than two dozen such calls in the United Kingdom.No explosives were found, and finding the sources of the calls may be next to impossible.Police in the communities that took those automated phone calls are joining forces with federal investigators, but experts said hoaxers can use high-tech disguises to hide.Children were evacuated from the Amherst Street Elementary School in Nashua as soon as the automated call was received.Nashua police, including a K-9 trained in explosives detection, swept the school and found nothing.Around the same time, similar bomb threats were phoned into schools in Berlin, Keene, Londonderry and Portsmouth.No explosives were found in any of the schools, but parents were left feeling uneasy.“I mean, it’s scary, but they sounded like they had everything under control,” said Megan Fantasia.“It’s kind of scary,” Krystal McLaughlin said. “You hear it so much that one of these days, it could actually happen.”Nashua police said they’re working with other law enforcement agencies after this latest round of robo-call bomb threats against schools.“We are aware that there are several schools in the New England area that have received similar type reports over the last couple months,” said Lt. Kerry Baxter.“It could be a very, very small organization spreading massive fear – they’re hitting school,” said Mark Bermingham of Snoopwall, a Nashua-based cyber-security firm. “It’s an automated call with a robotic voice coming in so they can hide who the voice is. But more importantly, they’re burying the mechanism for delivering the call.”Bermingham said it’s easy to hide the computer where the call originates, or even give it a false location.“We might be able to identify what geography it’s coming from, but to actually hone in on the specifics of that geography, unless there’s international cooperation – which doesn’t really exist – is nearly impossible,” he said.Still, police and federal agencies are teaming up on this case, including the New Hampshire Information Analysis Center, which taps into resources like Homeland Security and state police.Get the WMUR app12967056