Schools in Newtown, Connecticut, were on locked down Monday afternoon after a local school received threatening phone calls, CT Now reported.
A call was made around 2 p.m. to the Hawley Elementary School on Monday, which "contained an implied threat," according to CTNow.
Shorty after, school security responded and notified local authorities, including Chief Michael Kehoe who advised that the school go under "modified lockdown."
Assistant superintendent Linda Gejda did not choose to define "modified lockdown" because if its sensitive nature and security concerns.
Other schools, including Newtown High School, were under "soft lockdown," according to a statement posted by the school on Twitter.
"District assessing phone threats to other building... High School on SOFT lockdown until threat is assessed," read the post.
A short time later the school tweeted that the lockdown had been lifted.
Buses and some other transportation was reported to be delayed following the lockdown.
There were no reports of injuries.
The FBI has since been notified and is helping in the investigation to learn more about the strange phone call.
Parents in Newtown were concerned and confused as to why anyone would do such a thing.
"Luckily it was short lived, but it was another nightmare of course," Karen Dryer, mother of a kindergarten student and a high school student at Newtown High School, told ABC News. "It's still very raw, and for this to happen is just awful."
Upon learning about the lockdown, Dryer immediately drove to Sandy Hook to pick up her son when she received a call from Superintendent John Reed.
"He said they were on modified lockdown because there was very credible threats made to Hawley School, toward the staff and students, and that it had been lifted but the police and FBI were following up," she said.
Hawley Elementary School is less than two-miles away from Sandy Hook Elementary School, the site of the vicious massacre that took the lives of 20 first-graders and six teachers last December.
