A Minnesota school district went in lock down of several buildings on Wednesday after a 9-11 call.
Authorities later learned it was a prank, the Associated Press reported.
"He claimed he needed help because there was a shooter in the building with an AK-47 and that there were a couple of victims," Scott County Sheriff Kevin Studnicka said.
The 8 a.m. emergency call prompted a lockdown at the middle school, high school and Central Education Campus buildings in New Prague, about 45 miles southwest of Minneapolis.
A telling sign it was a prank call was when dispatchers asked for the caller's cellphone number, he said it was knew and that he did know it.
"When the initial entry into the schools by officers was made, it was quickly determined that nothing had taken place," New Prague Police Chief Mark Vosejpka told a news conference. "In this day and age you have to take these things very seriously and we do. We did. We are fortunate that it came to a closure ... that it was a prank and that we do know the responsible party."
The middle and high school have a combined enrollment of 2,067, the AP reported.
Classes were canceled for the rest of the day, and expected to resume on Thursday. This district experienced another case of a student phoning in a bomb threat earlier this year.
The incident comes three months after a gunman killed 26 people, including 20 first-graders, in a shooting rampage at a Connecticut school, spurring nationwide calls for action to stem gun violence.
