AURORA, Colo. -- A 31-year-old Aurora man who posed as a teenager was charged in connection with 18 sexual assaults of underage boys and girls, Aurora police said Monday.

Due to his youthful appearance, police said that Zuri-Key Latifbay McGhee had been passing himself off as being 13 to 15 years of age.

Police began their investigation when the parents of a 14-year-old boy came forward after he told them he had been sexually assaulted by McGhee starting in 2002 and continuing into 2005.

McGhee was arrested while living in an Aurora home with an 11-year-old boy and the boy's parents.

Police said they were able to uncover 17 other alleged sex assaults on both boys and girls between the ages of 9 and 13.

Investigators believe that McGhee met some of the alleged victims by volunteering at local schools, churches, etc. He would also host sleep-over parties for pre-teen and early teen juveniles at motels and other venues where social events could be held, they said.

Police also believe there may be additional underage victims who are reluctant to come forward. They asked anyone who has had a close association with McGee to contact Detective Dean Ziegler at (303) 739-6088.

McGhee is being held on n $800,000 bond on charges of sexual assault on a child -- pattern of abuse, sexual assault on a child by one in a position of trust, sexual assault on a child and numerous related charges, police said.

Police also said that McGhee has a criminal record in New Mexico.