Detectives at the NYPD Special Victims Unit last week busted a man suspected of being the bike-riding groper who attacked six women in Astoria and Long Island City.

Police at the 114th Precinct joined the search for the bike-riding pervert who sneaks up on women and slaps or grabs their buttocks, or grabs their breasts before speeding away – often shouting obscenities about the victim’s body.

Police on patrol out of the 114th Precinct arrested the suspect on the morning of October 18, after they spotted him speeding away from a screaming woman at Broadway and 31st Street, authorities said.

Cops nabbed the suspect after he blew through a red light at the intersection. Police believe the suspect is the man wanted for sexually assaulting six women.

Police last week were in the process of calling in the victims for a lineup, to determine if they can positively identify the suspect.  

One victim said the brazen biker assaulted her on two consecutive days in July. The woman said she was walking when the man rode his bike toward her. The man stopped, smacked her rear end and sped off, the 33-year-old woman said.

The man rode up behind her the next day, grabbed her and cracked a smile when she screamed for help.

Another 25-year-old woman said the man exposed himself to her and started moaning as he sped away. “The guy is really sick,” the woman said.

“I felt him behind me. He slapped my butt and he kept on riding. By the time I realized what had happened, he was gone,” another 30-year-old victim said after the July 7 incident.

In an effort to assist police in their search for the biking groper, several of the victims established a Web site, www.WhyLeaveAstoria.com to gather and disseminate information on the man.  More than a dozen Astoria women have turned to the local social networking site, sharing details of their unwanted encounters with the cyclist.