SAN DIEGO (CBS 8) - The CBS News 8 Crimefighters are helping authorities in a manhunt. Police are looking for William Dale Lynch who is wanted for sexual assault and felony incest.

He was on parole when the crimes were committed.

His criminal history includes: assault with a deadly weapon which caused great bodily harm, and felon in possession of a gun. He is considered armed and dangerous.

Lynch is 45-years-old, 5'11, weights about 210 pounds. He is described as having black hair and brown eyes. He has tattoos on both arms.

He is known to frequent Spring Valley and the Mid-Cities area. He has previously worked in construction.

If you have any information, you're asked to call the San Diego County Crime Stoppers at (888) 580-TIPS. A reward is being offered for his arrest. You can also make a tip and still remain anonymous.