A 60-year-old man struck by a hit-and-run cyclist in the Flatiron District last week has died, cops said Wednesday.

Michael Collopy was standing in a bike lane at Sixth Avenue and 23rd Street when a cyclist heading north in the lane rammed into him and kept going at about noon on July 31, cops said.

Collopy, who lives a few blocks from the scene, died Monday at Bellevue Hospital.

Police initially said that he died of his injuries, citing the city Medical Examiner’s Office.

The ME, however, said Thursday that it had made no such determination, and that there was a misunderstanding by NYPD detectives.

“For clarity, the cause and manner of death in this case is pending determination,” the agency said in a statement.

Police said they are looking for the cyclist, but couldn’t immediately provide a description.

Collopy’s death left his Chelsea apartment-building doorman stunned.

“He was one of the good ones in the building, a nice person,” said the worker, who identified himself only as Jay. “He was always full of jokes. I’m pretty much in shock right now. He always used to come and say ‘Hi.’

The doorman said Collopy lived alone and has been in the neighborhood for at least seven years.

At the intersection where Collopy was struck, The Post on Wednesday night witnessed several bicyclists blow through red lights.

“These cyclists are getting out of control!” one woman said.

Another local recalled how the other day she witnessed a cyclist nearly slam into a little girl.

“Officials have to start getting firmer with these bike lanes. Maybe start giving tickets,” she said.

A pedestrian died after being struck by a cyclist on May 4. Donna Strum, 67, succumbed to injuries suffered 10 days earlier when a cyclist blew a red light and slammed into her in a crosswalk.

Strum suffered a fractured skull and doctors put her into a medically induced coma after she was struck on West 57th Street near Sixth Avenue at about 1:40 p.m. on April 24, police said.

The 40-year-old unidentified cyclist remained at the scene. He told cops his gears weren’t shifting correctly and his brakes weren’t working, according to police sources. Cops issued him a summons.

In 2014, 58-year-old Jill Tarlov — the wife of a CBS executive — was rammed by a speeding cyclist in Central Park. The impact left her brain-dead and she died three days later.