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Diane Taylor, 20, was last seen about 5 a.m. at the Starbucks on Santa Rita Road in Pleasanton.

PLEASANTON -- An at-risk Pleasanton woman who went missing was found in Southern California by police Friday.

Diane Taylor, 20, apparently decided to take a bus to Los Angeles on the spur of the moment and didn't let anyone know of her whereabouts, Pleasanton Lt. Jim Knox said. Taylor went missing after being seen around 5 a.m. Thursday morning at the Starbucks on Santa Rita Road.

Taylor is on required medication and was not taking it at the time of her disappearance, police said.

Contact Rick Hurd at 925-945-4780 and follow him at Twitter.com/3rdERH.