Spacey has faced a series of allegations of inappropriate behaviour in recent weeks
Police in the UK are investigating a second alleged sexual assault by actor Kevin Spacey, dating back to 2005.
Met Police officers say they are looking into a claim that a man sexually assaulted another man in the London borough of Lambeth.
The force is already investigating a claim of of sexual assault made against Spacey which allegedly took place in the same area in 2008.
A spokesperson did not identify the alleged attacker but confirmed the latest allegation, made on Friday, concerned the same man.
"It is alleged a man assaulted another man (Victim 1) in 2008 in Lambeth," the force said in a statement.
"On Friday November 17 a further allegation was made about the same man. The allegations are of sexual assaults against a man (Victim 2) in 2005 in Lambeth.
"Officers from the child abuse and sexual offences command are investigating."
It comes after London's Old Vic theatre, where Spacey was artistic director from 2004 to 2015, said it had received 20 complaints of inappropriate behaviour by the Hollywood actor.
It is not clear whether the investigation launched by Scotland Yard is a result of the Old Vic's report.
Spacey has faced a series of allegations of inappropriate behaviour since actor Anthony Rapp claimed Spacey had made a sexual advance toward him in 1985 - when Rapp was just 14 and Spacey was 26.
Spacey said he did "not remember the encounter" but offered "the sincerest apology" if it had taken place.
He has not been charged with any crime.
Netflix and Sony Pictures have cut ties with the star, firing him from House Of Cards and replacing him in upcoming film All the Money in the World.