The search for a missing teen from Cheltenham continued for a third day Wednesday as friends and family members organized a vigil for him.

Jacob Marberger, 19, has been missing since 3 a.m. Monday morning, when police say he may have taken a rifle from his parents' home.

A sophomore at Washington College in Chestertown, Md., Marberger was facing school disciplinary action for waving an antique pistol on campus last month. Though he was cleared to return to school after the incident was reported, police in Maryland now have a warrant out for his arrest on weapons charges.

He was last spotted on surveillance camera footage early Monday morning at a Wal-Mart in Hamburg, Berks County, said Cheltenham police Lt. John Frye. He said Marberger purchased a box of ammunition at the store.

"They haven't been able to get a hold of him since," Frye said.

Washington College sent students home Tuesday, and President Sheila C. Bair announced Wednesday that the campus will remain closed until after Thanksgiving due to "the difficult events of the past few days."

Chestertown police are leading the search for Marberger, with assistance of state police and federal officials.

- Laura McCrystal