NEW DELHI — Indian police said Monday that they arrested four men on suspicion of raping an American tourist who came to New Delhi earlier this year, marking another incident of sexual violence to stir outrage.

Police Officer Rakesh Kumar said the suspects — a tour guide and his associate, a car driver, and a hotel worker — were arrested Monday.

The woman told police that the four men raped her after she was drugged in a New Delhi hotel room in April. They denied the accusations.

She also said the four men had shot a video of the attack and had threatened to make it public if she reported the matter to anyone, police said.

The woman went back to the United States and filed a complaint with New Delhi’s police commissioner. She returned to the Indian capital earlier this month to pursue the case because she was dissatisfied with the progress of the police investigation.

The Press Trust of India news agency said the police did not arrest the four men earlier because the travel agency they worked for conducted an internal inquiry and cleared them.

The suspects also told investigators during questioning that the woman was trying to falsely implicate them and had gone with them to Agra to see the Taj Mahal a day after accusing them of the crime, PTI said.

The case highlights the persistent violence against women in India despite tougher laws against sexual assault.

ASSOCIATED PRESS