Several schools in Highland, Indiana, were put on lockdown Wednesday after someone made a call to police threatening to shoot students.
In the call, which reportedly came from a Dallas phone number, someone made a threat to shoot up a high school if $2,000 wasn't left in a garbage can outside of the school, according to Highland Police Commander George Georgeff.
Six schools, including four elementary shools, in the Highland school district were put on lockdown at about 11:30 a.m. The lockdown was lifted at about 1:45 p.m.
Highland police said they were working with officers in Dallas to trace the call. The Dallas police said the number was used to report a burglary in 2012, and they were sending officers to the address to investigate, Georgeff said.
Brian Smith, the school district's superintendent, said the lockdown was put in place strictly as a precaution.
Georgeff said there was no threat inside the building.