Police say the shooter's weapon is stuck during the rampage

CINCINNATI (AP) – A gunman who killed three people in a Cincinnati office building after being disoriented after being fired four years ago in South Carolina filed a complaint in June.

Authorities said on Friday that they did not understand why 29-year-old Omar Enrique Santa Perez opened fire in the lobby of a building he had never worked in or had known connections to. The city police chief said that the shooter's mental health history is one of many areas they investigate.

Police Chief Eliot Isaac stated that Santa Perez had legally purchased the 9mm handgun about a month ago in Cincinnati before randomly pulling out workers on Thursday morning in Fifth's headquarters building Third Bancorp.

Security images inside the hall showed him by pulling a briefcase containing hundreds of ammunition over his shoulder. The police then discovered that his gun had been blocked during the four minutes of the gust, said Isaac.

The video also showed that Santa Perez was walking quickly in front of a security turnstile when he was shot by police officers who had shot through a window.

Santa Perez had been in Cincinnati since at least 2015, the police said. Before that, he lived in South Carolina and Florida.

In 2017, he filed a lawsuit against CNBC Universal Media LLC and TD Ameritrade Holding Corp. Hacked his computer, spied on him and published details about him.

Santa Perez said companies use audio speakers and digital cameras to invade their privacy.

The two companies rejected the applications, and a federal magistrate announced at the end of June that she had rejected the appeal, claiming that it was "disjointed, difficult to decipher and illusory".

The records show that Santa Perez had a history of minor offenses in the three states where he had lived. One arrest made a troubling picture of him when he was charged with trespassing after being fired from a kayaking company in Greenville, South Carolina.

In October 2014, his boss told agents that Santa Perez had launched tools and had not acted in the week prior to his dismissal and that he "was afraid of what Omar could do" according to a police report.

A police officer stated that Santa Perez was on the ground, refusing to leave and seemed upset and disoriented. He mumbled "about the war and the economy" and talked about how he was upset to be fired, the officer said in a report.

The neighbors who lived in a building in the Cincinnati area where Santa Perez was moving in this year gave contradictory descriptions of him.

Some told the local media that he looked angry and that they were not saying hello, while another said that he always seemed to be in a good mood .

The coroner recognized the body of one of the three men killed during the shooting. Dr. Lakshmi Sammarco met Pruthvi Kandepi, 25, in a local Hindu temple. The two also shared the same city and the same language, Telugu. Sammarco posted Thursday on Facebook, asking how officials will explain to his parents "they will never see their son again because of a senseless shootout in a foreign country".

The local office of the Telugu Association of North America said they were planning to help Kandepi's father. He wants his son's body brought back to India.

Kandepi was an engineer who worked as a consultant for the bank.

The other two victims were identified as bank employee Luis Calderon, 48, and Richard Newcomer, 64, an entrepreneur working for Gilbane Building Company.

One of the injured was in good condition on Friday and another patient was in serious condition at the University of Cincinnati Medical Center.

Hundreds of people gathered Friday to remember the victims during a vigil on Fountain Square, just steps from the scene of the shooting.

The police and city authorities said that there could have been more casualties if the shooter's rifle had not worked badly and the police had not been around.

Cincinnati Mayor John Cranley congratulated the officers who fought and dismantled the gunman.

"If he had gone up in the elevator, mounted on a floor, had he been there earlier or a little longer, many more people would have been killed," Cranley said.

___

Seewer reported from Toledo. Associated Press reporters Jeffrey Collins in South Carolina, Terry Spencer in Florida, Villarreal in New York and researcher Randy Herschaft in New York contributed.