29-year-old Anthony Michael Martin, a former professional cyclist, disappeared Saturday afternoon, according to friends, while bicycling in the Oakland/Berkeley hills. Ominously, his cell phone was discovered by another cyclist on Tunnel Road in Berkeley later that day.

Martin goes by the name "Mike," and friends are seeking any information about his disappearance. He's described as slender, six feet tall, and likely wearing street clothes when he was cycling on a fluorescent green and white road bike. Anyone with information is urged to call the Berkeley Police Department at (510) 981-5900.