Cliff Richard, 73, is being investigated over an historic allegation he sexually assaulted a schoolboy at a religious rally in 1985.

His home in Berkshire was raided by police earlier this summer, which led to the Millennium Prayer singer returning home early from a holiday in Portugal.

Cliff has vehemently denied the allegations against him and has now taken to Facebook to thank fans for their support, insisting that he is determined to prove his innocence.

READ: SIR CLIFF RICHARD'S HOME RAIDED BY POLCIE FOLLOWING SEX ATTACK ALLEGATIONS

READ: ROLF HARRIS FOUND GUILTY OF SEXUAL ASSAULT

The post on the social networking site reads: "Hi everyone, this is just a brief message to thank all of you who have shown support, including those in the Press.

"I wanted to let you know that I'm doing ok and it goes without saying that I fully intend to clear my name.

"Just to be absolutely clear, the allegation is completely false and I will continue to cooperate with the police should they wish to speak to me again.

"Once again ... many thanks! (sic)"

Post by Cliff Richard.

Sir Cliff Richard is yet to be formally arrested or charged for the offence.

READ: KATIE PRICE SLAMS CONVICTED SEX ATTACKER ROLF HARRIS

Meanwhile a row broke out between South ­Yorkshire Police and the BBC after a raid on the singer’s £3.5million Berkshire home was filmed following a tip-off.

Senior officer Chief Constable David Crompton later apologised for this, claiming that this happened because the BBC put them in a "difficult position" over the search.