Suspect in killings shot himself, police say

The suspect in a double homicide who crashed his SUV after a high-speed chase with police may have shot himself with the same gun that was used in the killings, authorities said.

The handgun used by Matthew Andrew O’Reilly, 29, to kill himself on Interstate Highway 380 on Wednesday was the same caliber as the one used in the killings in Sunnyvale on Sunday, Capt. Doug Moretto of the Sunnyvale Department of Public Safety said.

Before the chase and suspect’s death, police were close to arresting O’Reilly, of San Mateo, on charges that could have led to a death-penalty case, Moretto said.

“We’re confident we have the person who did the killing,” Moretto said of O’Reilly.

To confirm their suspicions, police are performing ballistics tests on the handgun, he said.

After a stakeout Wednesday in San Mateo, Sunnyvale detectives saw O’Reilly enter a black Range Rover, which they determined had been stolen from the Los Angeles area. San Mateo police tried to pull over the SUV, and O’Reilly fled, leading police on a high-speed chase that ended with a crash on Interstate 380 near El Camino Real, Moretto said. Either before or after he crashed, O’Reilly used a handgun in the car to fatally shoot himself, he said.

The Sunnyvale killing occurred outside the Brass Rail strip club. Jason William Gamino, 29, of San Mateo, and Benjamin Osegura, 31, of Menlo Park, were shot to death inside a Range Rover — not the one O’Reilly drove Wednesday.

mrosenberg@sfexaminer.com

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