Suspect arrested in Oklahoma for online threats to Casper, Wyo.

CASPER, Wyo. --An Oklahoma City man is in federal custody for making an online threat of mass violence in Casper, Wyo.

The Casper Star-Tribune ( http://bit.ly/W3oGUR ) reports that federal agents arrested an unidentified person Monday afternoon.

Special Agent James Finch with the Oklahoma City Division of the Federal Bureau of Investigation released information Tuesday afternoon identifying the suspect as Glenn Allen Kirkham, 34.

Casper police started getting calls about the Internet threat around 7 a.m. Monday. Schools in the city were locked down for about an hour but then operated on "heightened awareness" the rest of the day.

According to the FBI, Kirkham is charged with making a threatening post on an Internet-based bulletin board site, claiming a planned attack would take place within a few hours of the post using small caliber handguns and other weapons.

The investigation led to Kirkham and he was arrested by Oklahoma City FBI agents shortly before 5:30 p.m. Monday.

Kirkham isn't believed to have any ties to Wyoming and investigators think Casper was a random target.