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A San Gabriel man accused of shooting and killing a Pomona SWAT officer in 2014 earlier had told two close friends he wanted to leave the Mongols motorcycle club, according to testimony Thursday in the man’s murder trial.

The two friends, Jorge Luna and Andrew Ruedas, testified in the second trial of David Martinez which is being held at the Clara Shortridge Foltz Criminal Justice Center in Los Angeles.

The prosecution pointed out that the two men testified to what Martinez told them but he didn’t quit the Mongols, still attended Mongols events and even joked and bantered with Mongols members in text messages and a phone call. The prosecution played audio of a call Martinez made from county jail where he talked to different Mongols members and showed text messages between him and other members.

Martinez has been charged with the second-degree murder of Officer Shaun Diamond and also charged with assault with a firearm upon an officer. His first trial in 2019 ended in a hung jury.

Martinez has claimed that he thought the Pomona SWAT officer who was serving a search warrant in 2014 was fellow Mongols motorcycle club members trying to break into his parents’ home. He said in testimony this week that he saw the barrel of a gun pointing at his father and fired a 12-gauge shotgun to protect his family.

Martinez testified Tuesday that he didn’t see anyone and had fired the shotgun at the patch of dark sky he saw as the door opened. The defense called it a warning shot.

Diamond was shot in the back of the neck and Martinez’s father, Arturo, was struck in the arm on Oct. 28, 2014. Diamond, 45, died the next day at Huntington Hospital in Pasadena.

At the time of the shooting, Martinez believed the police had also fired. But the prosecution pointed out during opening statements in April that none of the officers fired their weapons.

In Thursday’s testimony, Luna said that he has known Martinez for more than 25 years and thinks of him like a little brother. He said he found out Martinez was a Mongols member in the spring of 2013 after Martinez’s brother told him.

Martinez had a motorcycle accident that landed him in a hospital. When Luna visited him, Martinez admitted he was a Mongols member.

Martinez would later tell him about wanting to leave the group. These conversations occurred when Martinez was visiting Luna’s wife at a hospital, according to Luna.

“He told me he wanted no more part of that,” Luna said.

Martinez also told him he felt threatened by some Mongols members, Luna said. There were some members he liked.

“He only trusted a couple of people,” Luna said.

Brady Sullivan, Martinez’s lawyer, asked him if Martinez was afraid to quit because some members might come to Martinez’s parent’s home in San Gabriel and cause problems. Luna agreed.

Sullivan also asked Luna if Martinez indicated he was trying to walk a fine line with the Mongols by attending events but still distancing himself. Martinez wanted to buy time, wanted to leave his parents’ home and move his family. according to Luna.

Ruedas said he has worked with Martinez in the pest control business, has known him for two decades and considers him a mentor, an older brother and a good friend. After a former co-worker at Terminix died, he said Martinez joined the Mongols.

Martinez also told Ruedas he wanted out of the Mongols.

“It wasn’t what he thought it was going to be,” Ruedas said, adding at first Martinez thought it was going to be a group of guys riding motorcycles.

Martinez told Ruedas he wanted to focus more on his family. Martinez also told him some Mongols members were two-faced.

Deputy District Attorney Hilary Williams asked Luna and Ruedas if they were aware Martinez didn’t quit the Mongols and that he still went to events held by the Mongols.

“I don’t know if he quit or not,” Ruedas said. He knew Martinez tried to step away from the group, he added.

She asked the two men if they were able to read Martinez’ text messages or have they ever looked at his phone.

“I don’t even look at my wife’s phone,” Luna said.

Williams asked Luna if he was aware Martinez has a tattoo of Gengis Khan’s head on his stomach. (The head is a symbol of the Mongols.) He wasn’t aware of it.

An investigation by a task force into the Mongols motorcycle club led to several search warrants being served on Oct. 28, 2014. Pomona SWAT was asked to serve the search warrant at a house in the 100 block of San Marino Avenue in San Gabriel. Martinez, his parents, his sister, his girlfriend and their two children lived there at the time.

Suspect in Pomona officer shooting wanted out of Mongols, friends say

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