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Update: The California Highway Patrol announced on Saturday evening that William Guazzaloca has been located. The Silver Alert has been deactivated.

California Highway Patrol issued a Silver Alert for a missing 74-year-old man on Friday who was last seen in Menlo Park earlier this week.

William Guazzaloca is believed to be driving a 2019 black BMW X3 with the license plate FL840DP. He was last seen at approximately 12:30 a.m. on Sept. 1 near Sand Hill Circle in Menlo Park, according to the Silver Alert.

Guazzaloca is described as 6 feet 2 inches tall and approximately 190 pounds, with black hair and blue eyes. When he was last seen, he was wearing gray shorts and a t-shirt of unknown color, CHP said.

Anyone who sees him is asked to call 911.

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Riley Cooke is a reporter at Palo Alto Weekly and Palo Alto Online focusing on city government. She joined in 2025 after graduating from UC Berkeley with a bachelor's degree in political science. Her...

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