Singer Nelly under investigation for UK sexual assault after allegedly attacking a fan who wanted a selfie in Essex.

UK police are looking into the alleged victim’s claims that the star attacked her after she asked him for a photo back on December 5 after his performance at Cliffs Pavilion in Southend, Essex.

She explained she only wanted to take a picture with her super star Nelly but says he then placed his arm tightly behind her butt and asked if she could stay behind to talk to him.

The woman says she went to his dressing room with her friends and that he asked her into another room where he allegedly dropped his pants once they were in the room and he started masturbating before her.

She also claims he put his hand on her top and tried to pull it off and that he tried to kiss her but she resisted and ran out of the room after struggling with the artist.