EDISON - Authorities say that a man posing as a teenager on Facebook has been accused in a second sexual assault of a teenage girl.

The Union County Prosecutor's Office says 28-year-old Michael Sebastian, of Perth Amboy, has been charged with molesting a 14-year-old girl at a motel on Route 22 in Springfield after allegedly picking her up at home.

Officials say Sebastian is also accused of sexually assaulting another 14-year-old girl in his car a couple of weeks ago. They say that in both cases he used Facebook to find and befriend the teens.

Sebastian is facing charges of luring, endangering the welfare of a minor and criminal sexual contact.

Man uses Facebook to track down, assault teenager