Surveillance footage captured the moment a suspected gunman allegedly opened fire on co-workers at an assisted-living facility in South Los Angeles, wounding three people.

The video appears to show Darryl Arnette Barnes, 60, a maintenance worker at Progressive Home for the Elderly, firing a handgun at colleagues on Monday, according to KTLA.

Before the shooting, Barnes reportedly said, “I’m tired of this.”

In the footage, Barnes appears to take the weapon from a shopping cart before shooting at one person. He is then seen on the opposite side of a counter, where he allegedly fires additional rounds.

One person can be seen diving over the counter while attempting to escape.

Three people were taken to the hospital following the shooting. One victim was listed in critical condition, while the other two were reported to be stable.

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“They are all believed to be employees, suspect included,” LAPD Capt. Mike Bland told The Post. “The shooting itself is believed to have occurred in the lobby of the building. He [the suspect] was located by responders inside of the building.”

The Los Angeles Police Department identified the victims as a woman in her 40s, a woman in her 60s and a man in his 60s. Their names have not been made public.

Officers arrested Barnes without incident inside Progressive Home for the Elderly. The multistory facility houses about 100 residents and provides housing for low-income seniors.

Barnes has been charged with three counts of attempted murder and is being held on $4 million bail.

If convicted, he faces a possible life sentence in prison.

Pastor Jason Malveaux, senior pastor of Progressive Community Missionary Baptist Church, which is associated with the residential facility, spoke with KTLA after the shooting.

“My biggest prayer is that we figure out a way to have peace with one another,” Malveaux told KTLA. “It doesn’t have to always escalate to hot tempers.”