Indian police have arrested three men suspected of raping an American tourist outside the resort town of Manali in Himachal Pradesh state.
On Thursday, investigators said they had arrested three men in their early 20s suspected of being involved in the case.
The woman, who has not been identified, was reportedly picked up by the three men in a truck as she tried to hitchhike back to her guest house Monday night.
Officers are questioning the suspects, said the district superintendent, but will only charge the men after they are identified by the victim.
He added that they have strong evidence the three are guilty.
The case has thrown fresh scrutiny on India's high rate of sex crimes against women.
Several tourists have been targeted following the brutal gang rape of a 23-year-old Delhi woman in December, who died of her injuries.
The incident prompted national outcry and put pressure on politicians to do more to protect Indian women.