SAN DIEGO -- A suspected sexual predator from San Diego has been added to the U.S. Marshals Service's "15 Most Wanted" list, 10News reported.

Frederick McLean, 55, disappeared last year after being charged with child molestation.

Since the original charge, investigators have learned McLean is suspected in a total of 10 cases, and officials believe there may be many more victims.

"There may be many more out there. So, if you have been victimized by this individual and are afraid to come forward, we encourage you to come forward and provide that information and help us bring him to justice," said Mark Owen, with the U.S. Marshals Service.

Investigators say the victims ranged in age from 6 to 12 years old and were both male and female.