(VALPARAISO, Ind.) -- A gunman has released the last two remaining hostages at an office building in Indiana, but he remains inside and armed, police said Friday.
No hostages remain in the Prudential real estate office that a gunman ambushed Friday, believing someone in the office owed him money, according to Sgt. Mike Grennes of the Valparaiso police department. One woman suffered a head injury during the hostage situation, but there were no injuries caused by gunshots, he said.
Police and FBI agents remain in a "standoff situation" with the gunman inside the building, he said.
FBI agents entered the Valparaiso, Ind., real estate office building around 1 p.m. after a report of hearing gunshots fired, according to Grennes.
"We're basically in a standoff situation," Grennes said at a press conference Friday. "From what I understand, he is not an employee."
Copyright 2012 ABC News Radio