A participant in the Brazilian version of reality TV show "Big Brother" is being investigated for suspected rape of a fellow housemate while she apparently was asleep during the program.

Police on Tuesday questioned male model Daniel Echaniz, 30, who was shown in live images in bed with 23-year-old Monique Amin apparently having sex under the covers.

"The young woman denies she was raped and has not pressed charges," Rio police spokeswoman Edileide Macedo said. "We continue to investigate the case because it is a public matter."

Television network Rede Globo expelled Echaniz from the program on Monday after a seven-minute video of the bed scene was posted on the Internet and police were called in to investigate.