Calexico police Officer Patrick K. Estrada turned himself in Thursday afternoon at the Imperial County jail and was arraigned on felony charges of statutory rape and sexual penetration of a minor with a foreign object.
Estrada, 24, of El Centro pleaded not guilty to both charges.
Estrada allegedly committed multiple sexual acts with a 16-year-old girl while she was a volunteer in the Calexico Police Department's Explorer program.
According to Yuma County records, Estrada was married March 31 to the alleged teen-age victim.
Arizona law allows a 16-year-old to marry as long as a parent signs a release form. The form for Estrada's bride was signed by her mother.
At his arraignment Thursday, Estrada's bail was set at $10,000 and was paid by a bondsman. His pre-trial hearing is set for 9 a.m. Tuesday.