A Brooklyn lawyer was arrested on Friday for three cold-case sex crimes that he allegedly committed years ago in Manhattan, cops said.

Rashaun Kelley, 35, was arrested and hit with several charges of burglary, sex abuse and attempted rape for allegedly following women into their apartment building and attacking them, police said.

Over the period of about a month in late 2014 and early 2015, Kelley allegedly sexually assaulted three women in the Lower East Side, Harlem and the East Village, cops said.

In the first attack, he followed a 19-year-old woman into her the elevator of her apartment building on Roosevelt Drive in the East Village on Dec. 16, 2014 and forcibly kissed her and grabbed her rear end, cops said.

Her struck again early the next morning, grabbing a woman in her Harlem apartment building and covering her mouth with his hand while grabbing her back, cops said.

And about a month later on Jan. 14, 2015, he followed a 31-year-old woman into her apartment in the Lower East Side, pulled her pants down and grabbed her waist, authorities said.

Police sources said he’s a suspect in several other sex attacks in the area from that time.

Kelley, a business lawyer who lives in East Flatbush, was busted for the crimes Friday after an investigation by the NYPD’s special victims unit.

He refused to answer questions while being lead out of a police precinct early Friday morning.