Floyd Mayweather is reported to have witnessed the apparent murder/suicide of his close friend and rapper Earl Hayes and his wife Stephanie Moseley over a Facetime call on Monday.

According to United States’ news outlet TMZ, Mayweather is said to have been called by Hayes on Monday morning, with the rapper claiming that his wife had been unfaithful to him.

Moseley, 30, was a star on VH1’s drama series Hit The Floor, but Los Angeles police confirmed yesterday that she had been shot by her husband Hayes, 36. Hayes was the son of singer-songwriter and actor Isaac Hayes.

TMZ sources claim that Hayes rang WBC and WBA welterweight world champion Mayweather and told him he was going to kill his wife. The pound-for-pound king of boxing apparently pleaded with Hayes not to do it, but Hayes carried out the murder before turning the gun on himself, police have confirmed.

Mayweather has not divulged how much he saw, but reportedly acknowledges that he was a witness and heard everything that transpired between the couple. It is also claimed that Mayweather is in a state of shock and is struggling to come to terms with what he saw.

Rapper Earl Hayes allegedly shot his wife before turning the gun on himself (Getty Images)

An LAPD statement said: “Los Angeles Police Department West Bureau Homicide Detectives are investigating an apparent murder-suicide that occurred earlier today in Park La Brea.

“On Monday, December 8, 2014, around 7:30 a.m., Wilshire Division patrol officers responded to a radio call of a shooting in the 300 block of Hauser Avenue. When officers arrived at the apartment complex they heard additional shots being fired. LAPD’s SWAT officers responded to the location and discovered two victims inside the apartment suffering from gunshot wounds.

“The initial investigation revealed that 34-year-old Earl Warren Hayes shot his wife, 30-year-old Stephanie Elyse Moseley to death and then took his own life.

“The Los Angeles Fire Department paramedics responded to the scene and pronounced both Mr. Hayes and Ms. Moseley dead at the scene.”

Moseley had small roles in films such as Sparkle, Mirror Mirror, Idlewild and Twilight: Breaking Dawn – Part 1. She also carried out stunt work for Halle Berry’s 2003 film Catwoman.

Away from the big screen, she featured as a backup dancer on both Britney Spears and Janet Jackson’s tours during the 2000s, while she has performed with artists including Beyonce, Jennifer Lopez, Mariah Carey, Rihanna and Usher.

Hayes was signed to Mayweather’s label The Money Team.