A third suspect was in custody Monday in connection with a shooting that left two men dead at a storage lot just north of the U.S.- Mexico border over the Labor Day weekend.

Marco Ramos Ramirez, 22, was arrested Friday for allegedly taking part in the slayings of Aaron Cruz, 42, and 64-year-old Richard Hartung, according to the San Diego Police Department.

At about 3:30 a.m. Aug. 30, patrol officers responding to reports of gunfire found Cruz and Hartung dead inside the camping-style trailers they lived in at the storage facility in the 2000 block Sunset Avenue in Nestor, SDPD Lt. Lou Maggi said.

“With the assistance of city-owned and private security cameras, investigators developed information about a possible suspect vehicle, a red Chevy Suburban,” Maggi said. “Investigators canvasse

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