The Metropolitan Police Service said this in a statement.
The London Police force was already looking into Spacey's actions for two other complaints; one from an alleged sexual assault on a man in 2005 and another in 2008. News the allegations of sexual assault, but did not identify Spacey as the man accused.
The Metropolitan police have been told that a third man was allegedly sexually assaulted by the Oscar-winning actor, this time in Westminster, London, in 2005. Officers from the Child Abuse and Sexual Offences Command are now looking into these new allegations.
In November, it was reported that the Old Vic theatre in London had received 20 separate allegations of inappropriate conduct by Spacey from 20 men who came into contact with him at the theatre, or in connection with it, between 1995 and 2013.
Allegations against Spacey first came to light back in October, when actor Anthony Rapp claimed Spacey made drunken sexual advances towards him when he was only 14 years-old.
While Rapp never approached Spacey following the alleged incident, after his claims were published Spacey, 58, addressed them in a statement on Twitter, while also coming out as gay. 'The only way these things can continue is if there's no attention being paid to it, if it's getting forgotten'.