PHILADELPHIA (CBS) - Philadelphia Police have two of the teenagers connected to the rape of a 12-year-old girl in Kingsessing in custody.

The girl says she was attacked by a group of 14-year-old boys Monday night in a stairwell inside the Francis Myers Recreation Center (see related story).

Police believe three boys assaulted her, while a fourth served as a lookout.

Authorities say the two teens in custody have been charged with rape. Police know the identity of the other two teenagers and are trying to locate them as of Wednesday evening.