A naked man allegedly knocked down and grabbed a 16-year-old girl Wednesday in Woodbridge, Virginia, police said.
The girl was walking to a bus stop about 6:15 a.m. when Musab Mohamed El-Sheikh approached her while naked and chased and tackled her after she tried to run away from him, authorities said.
A neighbor said she heard a woman screaming and called 911.
Tom Wardwell, who was walking his dog, also was knocked to the ground, Prince William County Police said.
"I heard the kid screaming, 'Help me, help me,' and I though maybe she was yelling at friends coming up the street," Wardwell said. "I turned around and got plowed in to. Both of us got knocked over by some crazy naked man, and I tried pushing him off and tried to get him to go away."
At least two other men rushed outside to help, but El-Sheikh kept hold of the girl until police arrived, Northern Virginia Bureau Chief Julie Carey reported.
Officers took El-Sheikh, 37, to a hospital for a 72-hour mental health evaluation. Then he will be booked into an adult detention center, and a judge will rule on whether he should be held longer or given bond.
No one was injured in the altercation.
A man who confirmed he is El-Sheikh's declined to answer questions.
The victim's parents said she is doing as well as can be expected. They said they always told her to run, fight, bite and scream if she was attacked, and that worked Wednesday.
El-Sheikh is facing charges of abduction, indecent exposure, and assault and battery, police said.
The incident happened in the 4700 block of Charter Court, about a block from El-Sheikh's home. He had recently moved into the neighborhood.
The victim is a student at a local high school. Her school district sent a letter home to parents of students in all grades.