Los Angeles police have arrested a 28-year-old youth pastor at a Venice church for alleged sexual molestation of a teenage girl and they believe there may be additional victims.

Demetrius Allen was arrested by Los Angeles Police Department Devonshire division detectives Aug. 3 following an extensive investigation into multiple allegations of sexual misconduct with underage girls who attend the First Baptist Church of Venice, an LAPD spokesperson said. Allen served as the pastor in charge of youth ministries at the church in the Oakwood neighborhood of Venice.

Allen is accused of having a yearlong affair with a 14-year-old girl that began in March 2010 and continued through May of this year, Los Angeles County district attorney spokeswoman Jane Robison said. Detectives suspect there may be other victims.

Police said the alleged relationship involved a youth member of the church but did not occur in Venice. The LAPD is conducting an ongoing investigation.

The Los Angeles County District Attorney’s Office charged Allen Aug. 5 with 10 counts of lewd act on a child, one count of possession of child pornography, and one count of contacting a minor for sexual offense – all felonies, Robison said. He is being held on $1 million bail.

Allen pleaded not guilty to the charges during an arraignment at San Fernando Superior Court Aug. 5.

Anyone with information about this case is encouraged to contact LAPD Devonshire area juvenile Dets. Teresa Pikor or John Macchiarella at (818) 832-0980, or (877) 527-3247 during non-business hours or on weekends.

Anyone wishing to remain anonymous can call Crime Stoppers at (800) 222-8477.