WASHINGTON, Sept. 6 (Xinhua) -- A gunman opened fire Thursday morning in a building in downtown Cincinnati, U.S. state of Ohio, in an attack that left him and three other people dead, authorities said Thursday.
The incident took place at 9:10 a.m. EDT at a 30-story building, home to the corporate headquarters for regional banker Fifth Third Bank and other businesses.
Local police said the gunman opened fire at the loading dock of the building and then entered the bank's lobby where he exchanged gunfire with police.
"Five victims injured, three dead. Suspect is dead. Three or four officers responded and engaged the shooter," the Cincinnati Police Department tweeted.
It's unclear if the gunman shot himself or was shot by officers.
The gunman wasn't identified, and police didn't comment on possible motive.
One of the victims died at the scene and two more died at the University of Cincinnati Medical Center, according to reports.
A spokeswoman for the medical facility said one victim remained there in critical condition and another was listed as serious. All four treated at the hospital suffered from gunshot wounds, she said.
Fifth Third Bank issued a statement Thursday afternoon, offering thoughts and prayers for those caught up in the "terrible event."
The bank operates some 1,200 banking centers in 10 U.S. states.