Nab ex-con in shoot slay during rob

An ex-con has been nabbed for fatally shooting a man visiting Brooklyn last month while snatching the victim’s chains, police said Thursday.

Ramel Chapman, 29, was arrested at his Boerum Hill apartment Tuesday and charged with murder, robbery and gun possession. The murder weapon was recovered at his home, police said.

Chapman allegedly shot Sean Robinson, 33, in the back while the victim was sitting with a friend in a Ford Mustang on Morgan Ave. near Stagg St. in East Williamsburg about 12:35 a.m.

June 14.

After shooting Robinson (inset), the gunman stole his gold chains, dropping one at the scene, pistol-whipped the 38-year-old friend and stole the pal’s necklace as well, according to a criminal complaint.

Chapman then menaced a security guard with the same gun before running off, police said.

The killer crook dropped in at The Anchored Inn bar to examine the jewelry he had just stolen before fleeing the area, according to the criminal complaint.

Robinson’s friend drove the bleeding victim to Woodhull Medical Center, but he could not be saved.

The friend said he’s still recovering from the shock of watching Robinson die.

“I’m taking it one step at a time,” said the still shaken survivor, who asked that his name not be used. “I’m sure it’s a good situation for the New York Police Department and citizens that a person like that is arrested. But still the most gut-wrenching, disheartening thing is that our friend, brother, son, cousin, father and fiancé to someone is still gone.”

He and the victim had been pals for about 18 years, he said.

“If he was inside a room full of people, at the end of the day he would at least know half of them and by the end of the week he’d be hanging out with them in some shape or form,” the friend said of Robinson. “That’s the type of person he was.”

Robinson, a father of two small children and a lab technician, lived in Stamford, Conn., and was in the city to go to a party, according to his mother, who lives in Brooklyn.

“He was a wonderful person,” the mother, Andrea Archer, told the Daily News last month.