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SAN DIEGO — Police say a resident managed to disarm a robber at his San Diego home Tuesday, then shot him to death as the intruder charged toward him.

Family members of the slain man are disputing that official account, however, telling FOX 5 Wednesday that the men knew each other and the shooting was a “set-up.”

The deadly shooting happened in the Mount Hope neighborhood around 9 p.m., according to San Diego Police Department. A 911 caller told dispatchers that someone had tried to rob him but that he shot the intruder.

When officers arrived, they found a man with several gunshot wounds lying inside the home. Police and then paramedics tried to save his life at the house and eventually took him to the hospital, but he was pronounced dead from his wounds shortly after arriving.

Investigators said Wednesday that they’re still sorting through all the details of what they’ve deemed a home invasion robbery. They believe it all started when the resident returned to his home near 43rd and J streets and found two men waiting outside for him.

One of them held the man at gunpoint and demanded belongings from inside the house, according to police. As the robbers moved indoors and searched for valuables, “the resident was able to disarm the subject with the gun,” an SDPD news release said, though it didn’t provide further details on how the man wrested the weapon away.

He then turned the gun on the robber, investigators say, and the intruder “reportedly charged the resident, prompting him to fire the gun several times, striking him.” The second man ran off.

Officers say the 62-year-old resident “has been cooperative and is not considered a suspect at this time.” The man he killed was 39 years old, SDPD said.

Neither man was publicly identified, but people who said they were family members of the deceased stopped near the scene of the shooting Wednesday while a FOX 5 crew was reporting on the story. They said the man is a father of four who knew the resident and that he was at the house for some kind of business transaction. Though they didn’t want to appear on camera, they said authorities aren’t getting the full picture.

“Home invasion? Where did they get that from? It was a set-up,” a woman related to the slain man said. “He knew him. He trusted him and didn’t have problems with him before.

“He was coming over here to pick up money — like if I sold you my car and you owe me — and he came to get his money and he was invited to come in. The next thing you know, his friend says the dude pulled out a gun and just started shooting him, and his friend ran.”

The other man involved in the shooting had not been publicly identified or arrested as of Wednesday afternoon. He was said to be in his 30s, though a detailed description was not released.

Anyone with information about the incident was asked to call the SDPD Homicide Unit at 619-531-2293, or report anonymously via Crime Stoppers at 888-580-8477.