DECATUR, Ga. -- DeKalb County police say a man accused of sexually assaulting two women by using the popular Web site Craigslist to lure them to a vacant apartment is HIV-positive.

Eighteen-year-old Allen Jamar McDowell is accused in two separate assaults at an apartment near his home in March and April.

Police spokeswoman Mekka Parish said Tuesday one woman was raped and the other robbed and sexually assaulted at the vacant apartment at 3527 Kensington Road.

Investigators think there are other victims and are urging them to call the the DeKalb County Special Victims Unit at (770) 724-7710.

McDowell was arrested April 19. He also is charged under a reckless conduct law which applies to people who know they have the virus which causes AIDS.

Parish says she does not know the extent of the victims' risk of infection.

McDowell remains in custody. It's not clear whether he has an attorney.