MARIETTA, Ga. -- Cobb County police say an Atlanta man sexually assaulted a 13-year-old girl he met on MySpace.com.

Police say 22-year-old Nehemiah Musa Wells was arrested Wednesday after the girl's father found him hiding in her bedroom.

"The relationship progressed. It's my understanding that the father of the 13-year-old victim came home yesterday and found the 22-year-old male hiding in her bedroom," Cassie Reece with the Cobb County Police Department told Channel 2's Ross Cavitt.

The Cobb County Sheriff's Office says Wells was charged yesterday with aggravated sexual battery, child molestation and sexual battery.

Cobb police spokeswoman Officer Cassie Reece says Wells started the relationship with the girl on the social-networking Web site last fall.

MySpace supposedly limits membership to people over the age of 14 but investigators say there are few checks and balances built in to the system.

The arrest warrant says Wells first met the girl at her home on November 1st and engaged in sexual intercourse with the girl without her consent at the time.

"It's very important if your children have a MySpace account to monitor it. Go in and see the photos they're putting up on the space. See what kind of contacts their making and the messages back and forth," said Reece.