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SAN DIEGO — A man surrendered to deputies after a deadly shooting at a Lakeside mobile home park late Friday afternoon, and close friends say the victim and his suspected killer were brothers.

The shooting happened around 4:30 p.m. at Pana-Rama Mobile Home Estates, on Willow Drive near Interstate 8, the San Diego County Sheriff’s Department confirmed.

Deputies said two 65-year-old men were hit by gunfire: One man died at the scene while another victim was rushed to the hospital. Officials did not immediately provide an update on the second person’s injuries.

A sheriff’s helicopter circled the mobile home park as deputies searched the area. Around 6:30 p.m., officials announced they had taken someone into custody. Loved ones rushed to the park as the investigation continued, and close friends told FOX 5 that the victim and the man who turned himself in to deputies were brothers.

Neighbors said the man, wearing a beanie and sweatshirt as officers pulled him up from his knees and led him to the back of a cruiser in handcuffs, was well-known in the small community.

“We knew this would happen. It was a matter of time,” said Heather Williams, who has known the brothers for more than 20 years. “I’m just livid. I’m absolutely livid.”

At the same time, a large police presence, including a SWAT-style vehicle, was seen in a residential area near Cuyamaca Street and Fletcher Parkway in El Cajon. Video from SkyFOX showed officers with guns drawn approaching a red sedan on the street, and neighbors told FOX 5 they saw a woman getting arrested nearby.

Police said they believed the incidents were related but did not elaborate.