JONESBORO, Ark. — A gunman who prompted a campus lockdown at Arkansas State University after driving onto campus armed with a loaded shotgun has been sentenced to 18 years in prison.

The Arkansas Democrat-Gazette reports ( ) 48-year-old Brad Kenneth Bartelt was sentenced after a jury found him guilty Friday on two charges of making a terroristic threat and terroristic threatening.

Bartelt received 18 years for making the terroristic threat and six years for terroristic threatening. The sentences run concurrently.

Jurors acquitted him on five counts of aggravated assault after he prompted the active-shooter alert that forced the shutdown for about an hour on Dec. 10.

Bartelt testified he had no vendetta against ASU but drove around the city looking for a place to shoot himself. He says he eventually decided on the campus.

Information from: Arkansas Democrat-Gazette,