R Kelly has been accused of sexually abusing a 17-year-old boy in 2006 in a shock new allegation.

The 54-year-old singer, known for hits including 'If I Could Turn Back the Hands of Time' and 'I Believe I Can Fly', has been in prison for the last two years on charges including sexual abuse of underage girls and child pornography.

According to TMZ, new court documents reveal that the rapper has now been accused of meeting a 17-year-old boy at a McDonald's in 2006 and subsequently embarking upon a sexual relationship with him.

Kelly is then said to have been introduced to a male friend of the boy - aged 16 or 17 at the time - before starting a sexual relationship with him too.

The new accusations could now feature as part of his latest criminal trial, which is due to get underway in Chicago next month.