SAN DIEGO (CNS) - A man followed and repeatedly groped a woman Wednesday as she was jogging through Ocean Beach, authorities reported.

The victim, who is in her 20s, was running on a path alongside the San Diego River about 11:30 a.m. when the assailant rode up behind her on a bicycle and grabbed her buttocks, according to police.

The woman looked at the man and tried to run away, but he followed her and groped her in the same way two more times before riding out of the area.

The victim described him as an unshaven, roughly 5-foot-9-inch white man who appeared to be in his mid-20s, wearing black jeans, a black long-sleeve T-shirt and a black "reggae style" hat, police said.