An armed man who triggered a lockdown when he drove onto the campus of Arkansas State University with propane tanks was arrested, police and local media reported Thursday.

The man had a shotgun strapped to his back and propane tanks "ready to blow," police told The Jonesboro Sun. Officers surrounded him within 30 minutes.

Police identified the armed man who drove his truck onto campus as Brad Kenneth Bartelt of Jonesboro.

The 47-year-old was taken into custody Thursday after driving his truck onto the campus and triggering a lockdown. Jonesboro Police said they had received a call Wednesday about a Facebook post Bartlet wrote in which he stated he was homicidal and suicidal and referred to an incident with the Social Security Administration.

Officers said Bartelt was already seeking medical attention, according to the report.

University spokesman Bill Smith said no shots were fired. The school went on lockdown around 1:30 p.m.

John Miller, a junior at ASU, told the Arkansas Democrat Gazette in a phone interview that he was taking a test in the humanities building when he saw through a window a green pickup drive onto the lawn in front of the union.

About five minute later, after finishing his test, Miller said "people came running and screaming, freaking out."

At that point, Miller ran with several women to the library as police and SWAT team officers began descending on the campus, he said.

The university is located in Jonesboro, about 130 miles northeast of Little Rock. Its current enrollment is more than 13,000, but not all students were on campus Thursday because it was the second day of final exams.

Jonesboro is also home to Westside Middle School, where an 11-year-old and 13-year-old shot and killed four students and a teacher in 1998.

The Associated Press contributed to this report.