Michael Jackson is rumoured to have a fourth child, femalefirst.co.uk reports.

Omer Bhatti, a 25-year-old Norwegian dancer, is thought to be the singer’s child from a one-night stand in 1984, the website alleges.

Jackson, who passed away last month, is said to have admitted to friends in 2004 that he was Omer’s father, the website adds. Bhatti is now believed to be seeking a DNA test to determine if he is a descendent of the King of Pop.

Although Omer’s mother Pia and her husband Riz — who have both worked for Jackson — refuse to talk about the star, Pia did tell Britain’s The Sun newspaper on Tuesday: “He was the King of Pop. But to us he was so much more.”

Omer has also previously spoken about his special bond with the singer, describing his “loyalty” in 2008.

He said at the time: “Loyalty is the most important thing for me.

“I have contact with Michael, and I think my loyalty to him is the reason we still have our contact. He is an unbelievably good human being.”

Omer also lived at Jackson’s Neverland ranch home for several years from 1997, and video footage exists of him unwrapping presents with Jackson and playing with a toddler, believed to be one of Jackson’s other children — Prince Michael, 12, Paris, 11 and Prince Michael II, also known as Blanket, seven.

The dancer was also at Neverland when police raided the property to investigate child molestation allegations in 2003.

On Tuesday, Riz confirmed his stepson was in the front row for the emotional memorial concert at the Los Angeles Staples Center.

He said: “I know because I was watching. I told my wife, ‘Just wait until the press see this. It’s not a small thing.’ Make what you like. I don’t want to discuss anything.”