One person is dead and six others are injured after a former doctor opened fire at Bronx-Lebanon Hospital in New York on Friday afternoon. The Shooting began at 2:50 p.m. on the 16th floor of the hospital in the Bronx borough of New York City. "This was not an act of terrorism," NYC Mayor Bill de Blasio told reporters Friday afternoon. "It was an isolated incident, a workplace-related matter." The shooter has been identified as 45-year-old Henry Bello.

The shooter

The shooter was a family physician at Bronx-Lebanon Hospital for six months until he resigned in Feb. 2015. The hospital forced him to resign after he was accused of sexual harassment by an employee, CBS News reported.

He sent threatening emails to one of his colleagues, Dr. David Lazala, after he left the hospital. Dr. Lazala trained the doctor, and described him as a "problematic employee."

The former doctor entered the hospital on Friday afternoon in black pants, black shoes, and a white physician's coat with a hospital identification badge. He hid an AR-15 assault rife under his coat. He entered the hospital in search of the employee who accused him of sexual harassment, CBS News said. When he could not find the employee, he began shooting at random. Authorities have not revealed the motive behind the shooting.

After shooting seven people, the shooter barricaded himself on the 17th floor. He tried to set himself on fire, according to NYPD Commissioner James O'Neill, but was unsuccessful. The shooter died of a self-inflected gunshot wound, and was confirmed dead by the NYPD at 3:55 p.m.

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Victims

One person is dead and six others are injured -- with several others sustaining minor injuries while evacuating the hospital -- according to CNN. Six of the victims are doctors and the other is a patient who was seeking care at Bronx-Lebanon. One of the doctors, a female, was pronounced dead at the scene. Her body was found near the shooter's body on the 17th floor, according to the New York City Patch. She was shot at random, Physician-in-Chef, Sridhar Chilimuri said.

"There are several doctors who are fighting for their lives right now," de Blasio said Friday afternoon. The other five doctors are in serious condition in the intensive care unit. Their names and the extent of their injuries are unknown. An eyewitness told CBS News that one doctor, a male, was shot in the hand. The patient is in stable condition with a gunshot wound to the leg.