A 25-year-old Hayward man was arrested early Tuesday after Marina police found him in a car with a 15-year-old girl, with whom he had allegedly engaged in a sex act.

Police questioned Darwin Israel Ponce, 25, and the girl in the 3300 block of Dunes Drive about 1:30 a.m., after the alleged act occured.

Ponce was booked into Monterey County Jail on suspicion of lewd acts with a child. The girl was released to her parents.