A 66-year-old man – believed to be an innocent bystander – was killed in an Upper Manhattan drive-by shooting Tuesday night, cops said. 

Reda Girgis was standing at the intersection at West 162nd Street and Broadway in Washington Heights around 7:10 p.m. when he took a bullet to the head, police said. 

It appeared he was not the intended target, authorities said. 

Witnesses told investigators that the suspects were firing rounds out of a dark gray SUV, possibly an Audi with New Jersey plates, when Girgis was struck, police sources said.

The vehicle fled south on Broadway, cops said. 

Girgis – who lives on that same corner – was rushed to Metropolitan Hospital Center, where he was pronounced dead, cops said. 

No arrests have been made, and the motive for the shooting – and who may have been targeted – were not immediately known. 

One bullet fragment was recovered at the scene, the sources said.