A girl of 15 was raped at a train station in Birmingham before being sexually assaulted by the driver of a car she flagged down to help her.
Detectives called the two attacks at Witton station "horrifying" and said they were launching a major manhunt.
The teenager was with a friend when she was approached by a man who led her to a secluded part of the station and raped her.
Shortly after she flagged down a passing car and was assaulted again.
British Transport Police and West Midlands Police are treating it as two separate reports of rape.
The first attacker is described by police as an
Asian man in his early 20s with light skin, brown eyes, skinny build and about 6ft tall.
Police said the second man was also
Asian and in his early 20s and about 5ft 6in to 5ft 7in tall. He was of a large build, with a beard and wore a blue jumper and black jeans.
The attacks happened between 19:00 BST on Tuesday and 02:00 on Wednesday.
CCTV has been seized and is being investigated
Girl, 15, raped twice at Witton railway station in separate attacks - BBC News