Houston police are investigating the alleged abduction and sexual assault of a 17-year-old girl.

The teenager was gone for four days before she was dropped off near her family's home, telling her mother she had been abducted and sexually assaulted.

The family's pastor, Reverend James Nash, was with the family Tuesday when the girl returned home. He said they were just about to distribute "missing" flyers when she was seen walking down the sidewalk.

"I could see she was depressed and scared. I had a feeling in my heart this was not a runaway," said Nash.

Houston police said the girl was last seen Friday and her mother filed a missing persons report Saturday. Police then got another report Tuesday, letting officers know about the alleged sexual assault and kidnapping.

"According to her, she opened the door and she was snatched," said Nash.

Police said the girl was reportedly abducted from her family's north Houston home near I-45 and Beltway 8. She told her mother she was taken to an unknown location and sexually assaulted. Her captors later dropped her off a short distance from the family's home.

Nash said although the girl is 17, she has the mental capacity of a 12-year-old. He doesn't believe she ran away on her own.

"If this kid did not go willingly, I want to see indictments, I want to see arrests. Too many things could have happened," said Nash.

Police said the girl's mother took her to a hospital for an examination after she returned home.