"I commend the law enforcement, fire and EMS personnel who swiftly responded to the scene and share my deepest sympathies with the innocent victims of this violent attack".
A shooter killed three people and injured two others in downtown Cincinnati, Ohio at what is known as the 5/3 building.
The shooting happened near Cincinnati's landmark Fountain Square.More news: Elon Musk smokes marijuana during podcast
The city's police chief, Eliot Isaac, said he could not confirm local media reports that the gunman was a disgruntled employee of the bank, and said he had no information that the victims were targeted.
The situation in Cincinatti appeared to be under control shortly before 10am [14:00 GMT] on Thursday, but police said they were still investigating. No police officers were hurt, Isaac said. They say he never worked there and an apartment search hasn't turned up any answers so far.
Video caught on nearby surveillance cameras would also be made public once cops have screened it, Isaac said. "We are still processing the evidence and looking for any opportunity to get any greater insight into the motive".
"I looked behind me and saw the guy - he shot and then he shot again", Richardson said. She works for Fifth Third Bank. The woman got back in the elevator and rode up to her floor, where Hanson said she was in shock and unable to form complete sentences. "You know, these are things that we see happening across the country, and we all have to be vigilant and prepared to deal with these situations". Then, she heard more that "sounded as if they were getting closer and closer".
Amanda Nageleisen, a spokeswoman for University of Cincinnati Medical Center, previously confirmed to HuffPost that the center had received four victims from the scene.More news: Leahy presses Kavanaugh over emails stolen by Republican operative
The other two remain in hospital, one in a critical condition and the other serious.
All four had suffered gunshot wounds. "This is abnormal. No other industrialized country has this level of active multiple shootings on a regular basis", Mayor John Cranley said in a news conference.
Fountain Square is host to concerts, food trucks and many retail shops. He said one investigator said it could have been "a bloodbath beyond imagination". Without the police's rapid response, "it could have been much, much worse", he said.
Witnesses in the area described a chaotic walk to work, hearing about 10 gunshots ring out during the morning rush. Leonard Cain was entering the bank when someone alerted him to the shooting.More news: Gay sex decriminalised, Bollywood gives a thumbs up to Supreme Court’s decision