US News

Victim’s mom: ‘Survivor’ exec cheated on slain wife

A “Survivor” producer cheated on his slain wife with another reality-TV guru who worked on a host of big-name shows, sources said yesterday.

The mom of murder victim Monica Beresford-Redman identified the other woman as Joy L. Pierce, who worked with “Survivor” executive Bruce Beresford-Redman in producing reality TV.

RadarOnline reported that Pierce is an LA-based casting director with credits for such reality hits as “Oprah Winfrey’s Big Give,” “The Contender” and “Dance War.”

In recent weeks, Pierce had been rounding up contestants for a reality show about overweight engaged couples, according to her Twitter.

Calls to numbers listed for Pierce were not returned yesterday.

Bruce Beresford-Redman has not been arrested for his wife’s slaying, but Mexican authorities ordered him last week to stay put. His passport has been confiscated.

Cops found the body in a sewer near where the couple was vacationing in Cancun.

david.li@nypost.com