(DENISON, Iowa) — Police in Denison, Wednesday evening, issued a statement with regard to an investigation into a bomb threat at the Denison High School earlier in the day, Wednesday.   According to a news release, at about 1:50 p.m. on Wednesday, Jan. 17, the school got a call from an unknown phone number. The caller allegedly said that they would “blow up the whole school” and was on the way there. They then hung up when asked who they were, the release states. Officers arrived at the school, and the entire building was put on lockdown, with all routes into the area blocked.

The Iowa Division of Criminal Investigations used location tracking and found out that the phone number had been used to call other Iowa schools that same day. When officers received information that this may have been a swatting call, they stayed at the high school for security purposes as students were dismissed. No threats were found when officers and administration staff did a full search of the building.

Read the entire press release below: