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A hirsute gunman fatally shot a 47-year-old man on a Brooklyn street corner Wednesday night.

The shooter opened fire on the victim outside a Dunkin’ Donuts at the corner of Atlantic and Fourth Aves. in Boerum Hill at about 8 p.m., cops said.

The victim, found unconscious with a stab wound to his chest and multiple gunshot wounds to his torso, was taken to Brooklyn Hospital, where he was pronounced dead, police said.

The victim bought a cup of coffee at the Dunkin’ Donuts moments before he was ambushed, said cabbie Adel Adbelrahman.

Ken Murray/New York Daily News Police investigate the crime scene where a gunman shot a 47-year-old man on Wednesday. 

“I heard six to eight shots and I see everybody scatter,” said Smith Reed, 43. "I see the guy on his back, he was breathing. Next thing you know he's coughing up blood, his blood was starting to bubble out his mouth."

The victim's identity has not been released, and a medical examiner has yet to determine the cause of death.

Police and witnesses described the shooter as a heavyset, bearded white man in his 50s with a green shirt, green jacket and white shorts.

He ran south on Fourth Ave., then turned west onto Pacific St., said Mohammed Wehya, 53, also a taxi driver.

"I heard three shots and I thought it was firecrackers," Wehya said. "I see the guy, he was running." With Jessica Chia