The building is home to Fifth Third Bancorp's headquarters along with a number of other businesses, including ice cream, pastry and sandwich shops.
Several streets are closed off and buildings in the area are on lockdown as authorities sweep the area.
Isaac says the shooter used a 9 mm handgun with some 200 rounds of ammunition.
The incident remains under investigation, and the gunman has not been identified. "And I'm thinking about how I can make a difference in the future", Austin said in the statement. Police were searching his apartment in North Bend Thursday afternoon, looking for any clues about the attack or its motive. Deters confirmed it was the suspect's residence.
"I saw a guy in a white shirt walk around and shooting like this - bing, bing, bing, bing", he said as he aimed an imaginary gun and pulled its trigger.
Police said a gunman entered the building through a loading dock and made his way to the lobby of the office building.
One witness, Leonard Cain, told the Cincinnati Enquirer that he was going inside the bank when someone yelled that he shouldn't because of the shooting.
"I kind of got down on the ground and then all the cops started coming", he said.More news: Facebook, Twitter defend efforts to stop election meddling
Two other people were hospitalized, including a woman whose family says she was shot 12 times.
Jessica Hanson, a contractor with the bank's concierge company, works on one of the lower floors overlooking Fountain Square.
A woman who works with her had taken the elevator down to get a drink.
Jessica Hanson said her co-worker was in shock and that's when people in her office found what had happened.
'I'm still processing the events from yesterday, the impact to the victims, to me and the community, ' she said, according to the Courier Journal. "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". He said Perez has lived in the Cincinnati area since at least 2015. Then, it "sounded as if they were getting closer and closer". "I can't put into words how grief-stricken we are", Cotter said. Dr. Lakshmi Sammarco had met Pruthvi Kandepi at a local Hindu temple.
One of the victims also died at the scene. One has died, two are in critical condition and one is in serious condition. All four treated at the hospital suffered from gunshot wounds, she said.
"The heroism of these officers is truly remarkable", Cincinnati Mayor John Cranley said.
"He built this city", Mayor John Cranley said Friday after speaking to Newcomer's wife.
"Per Fifth Third Bank, the shooter was not an employee of Fifth Third", police spokeswoman Tiffaney Hardy said via email.