A 65-year-old man fatally shot an apparent armed robber, 32, in Queens early Wednesday, authorities said. 

The younger man displayed an “unknown object” as he approached the older pedestrian around 2 a.m. on 82nd Avenue near Queens Boulevard in Kew Gardens, in what investigators believe may have been a robbery attempt, cops said. 

The 65-year-old then pulled out a gun and shot the other man multiple times in the chest, police said. 

The gravely wounded man was pronounced dead at the scene by responding EMS workers, cops said. His name was not immediately released, pending family notification. 

The gunman was taken into custody for questioning, authorities said. 

It was not immediately clear whether he would face charges.

A gun was recovered at the scene, police said.