Police confirmed contestants had filed a report that would be investigated.
The Indonesian contestants of the Indonesian beauty pageant, held in the capital Jakarta from July 29 to Aug. 3, said the organizers asked five of them to strip to their underwear for physical examinations in a room with more than 20 people, including men.
The five contestants were then photographed topless, said their lawyer, Mellisa Anggraeni, adding there was no need for such checks. Six contestants had filed complaints, she said.
The Miss Universe Organization said in a statement on Tuesday that it had been made aware of the allegations and it was looking into this matter.
"Miss Universe takes allegations of sexual abuse and impropriety extremely seriously. Providing a safe place for women is the Miss Universe Organization's utmost priority," it said.
"I felt like I was being peeked on, I was very confused and uncomfortable," said the unidentified woman. The broadcaster blurred her face.
Reuters tried to contact the company that runs the Miss Universe Indonesia pageant, PT Capella Swastika Karya, and the company's founder, Poppy Capella, through their social media accounts but they did not respond.
Jakarta police spokesperson Trunoyudo Wisnu Andiko said a report from contestants had been received on Monday and it would be investigated.
Religious groups in Indonesia, the world' most populous Muslim country, have in the past objected to beauty pageants.
Thai celebrity media tycoon and transgender rights advocate Jakapong "Anne" Jakrajutatip bought the Miss Universe Organization for $20 million last year.
The contest in Jakarta was held to select Indonesia's entry for the annual Miss Universe competition to be held in El Salvador late this year.
The contest run by the Miss Universe Organization, which was co-owned by Donald Trump between 1996 and 2002, has been running since 1952.
