One man was killed and another injured in a stabbing on a West Babylon road Friday morning, Suffolk County Police said.

A white SUV with out-of-state plates and another vehicle were both traveling southwest on Straight Path at 9:20 a.m., when “an altercation ensued,” cops said.

People got out of both cars, and a man from the white SUV stabbed two other men, according to authorities.

The two men were transported to an area hospital where one was pronounced dead and the other was treated for non-life-threatening injuries, police said.