Bruce Beresford-Redman's Brazilian wife, Monica, went missing on Monday from the Caribbean resort where they were on vacation. Her body was found in mangroves near the hotel.

Veronica Acacio, a senior official with the state attorney's office in Quintana Roo state, told Reuters an autopsy showed that Monica Beresford-Redman choked to death after a blow to the head.

Bruce Beresford-Redman, a former U.S. producer for the hit reality series "Survivor" and co-creator of the car make-over show "Pimp My Ride," had cuts and bruises on his arms, said state Attorney General Melchor Rodriguez.

"Hotel staff saw the couple arguing on Monday night in the hotel grounds," Rodriguez told reporters. "For the moment, he is the prime suspect."

An agent for Beresford-Redman could not immediately be reached. The producer was with a lawyer inside police offices in Cancun where authorities said he was making a statement.

Created in 2000, "Survivor" takes contestants to remote and exotic places and pits them against one another in a series of challenges.