Gwinnett County police say a 26-year-old man posed as a teenage girl on the Web site MySpace.com to lure a 13-year-old boy for sex.
Antoine Louis Johnson is being held in the Gwinnett County Detention Center without bond. Johnson was arrested Friday and charged with aggravated child molestation and child molestation.
Authorities said the boy told a guardian early last week that he had been molested in June 2008.
The boy said he met a girl on the social networking site who promised sex if he would allow her brother to perform sexual acts on him, according to police.
Johnson picked up the boy near the entrance of his neighborhood and took him to a nearby vacant house for sex, authorities said.
Police learned that Johnson contacted a friend of the boy and sought a meeting, again pretending to be a 16-year-old girl.
Johnson arranged a meeting Friday with the boy and his friend at the intersection of Indian Shoals Road and Biltmore Oaks Drive, police said. Investigators approached Johnson and took him into custody.
Additional charges are pending, police said.
Police are asking any other potential victims to come forward.