According to Buzzfeed, which broke the story, the commanding officer of the NYPD's public information office confirmed on Wednesday that police have been investigating a complaint, filed in May, accusing Singer of a "criminal sex act" on March 23, 2013. The victim is reportedly a male in his twenties.
The Buzzfeed story also notes that Singer's Twitter account indicates he spent the day of the alleged assault in Denville, New Jersey at an ice cream shop located about an hour outside of Manhattan (according to Google Maps).
Singer's attorney, Marty Singer, had some choice words for Buzzfeed, accusing its writers of being on a "witch hunt against [Singer] because he is gay."
The respected director and producer's sex life has been in the headlines since April, when he was sued by Michael Egan and a second, anonymous plaintiff for allegedly assaulting them when they were teenagers. Both plaintiffs later dropped their lawsuits.