According to police, the 24-year-old Rahman admitted to hitting Rivera on the back of the head with a lead pipe around 2:45 AM Monday morning.
Here's what cops say went down. Police say Rivera, a huge Lil' Kim fan, paid to attend the event -- and even brought the rap diva a bouquet of flowers. According to cops, she and a friend chatted up Rahman while drinking at the bar. At one point in the evening, Rivera was kicked out of the club for accidentally walking into the men's room. At the same time, according to Rivera's friend, Rahman coaxed the friend up onto the roof by claiming Rivera was there -- that's when the friend alleges Rahman came on to her. When she blew him off, she says Rahman found Rivera outside and "told her he could get her back in."
Cops say Rahman took Rivera through the employee entrance, up to the roof in a service elevator and that's when he hit her over the head with a lead pipe inside a utility shed. She was killed instantly.
Rahman worked at the club for four years and has no criminal record.