A 19-year old woman was attacked as she walked home through Tilehurst, near Reading, Berkshire, at 6.30 this morning.
A white man who was in his late 30s attacked her and forced her to swallow a mystery pill at knifepoint before assaulting her and dragging her into the Thames.
The attacker threatened the girl to swallow a pill or he will stab her. Police believed that he intended to make her unconscious. The sex attacker attempted to sexually assault her.
The girl was able to fight back and fled from the scene. She reached her home and informed her mom. Police launched an investigation for the sex attacker.
The woman has since been taken to hospital and detectives continue their investigation.