Indian police arrested four men, including a bell boy of a five-star hotel in the national capital, on Monday for allegedly raping an American tourist in April, police said, highlighting the dangers faced by women in the country from violent sex attacks.

The 25-year-old tourist, who had made a complaint in October, returned to India recently to depose before a magistrate and identify the accused, the Times of India newspaper reported.

After receiving a complaint from a U.S.-based NGO on behalf of the victim, followed by her written complaint earlier this month, the Delhi police have arrested four men, Dependra Pathak, joint commissioner of Delhi Police, told Reuters.