LOUISVILLE, Ky. (WDRB) -- A Louisville school had to be placed on lockdown Thursday afternoon after police say a man threatened a parent and tried to get in the building.

Police say 49-year-old Frank W. Frazier got into an argument with a parent at Layne Elementary School, near the Jefferson Community and Technical College's southwest campus, shortly after 4 p.m. Thursday.

Police say the confrontation got so heated, Frazier challenged the other parent to come outside, making threats of physical violence. Frazier went outside, but the other parent refused to follow him, so he went back in.

School officials asked Frazier to leave several times. At one point, Frazier was outside the building, and the principal allegedly had to hold the door closed and get someone to bring a key to lock the door to keep Frazier out.

The school was placed on lockdown until police arrived.

Even after police appeared on the scene, Frazier came back to the school and tried to get inside, according to an arrest report.

He was taken into custody and charged with criminal trespassing, a misdemeanor.

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