An ex-con with 15 prior arrests was busted for randomly stabbing a teenager in the neck near City Hall then flashing a menacing smile at the victim, cops said Thursday.
Smirking maniac Marvin Dupree, 41, allegedly walked up behind Brooklyn College student Alan Ryvkin and knifed him in the neck at around 11:30 a.m as the 19-year-old waited outside a Centre Street building to dispute a vehicular summons, according to authorities.
Cops caught up with the alleged grinning slasher in Harlem hours after the attack and charged him with felony assault, authorities said.
Ryvkin said he was speaking with a woman just outside the building at 1 Centre St. when the stranger quietly walked behind him and knifed him.
“When he walked away, the dude looked at me and smiled with the knife in his hand,” Ryvkin exclusively told The Post over the phone Wednesday.
“I didn’t know who it is. I don’t know what it is. I got stabbed and I sit on the ground and start bleeding out.”
Sam Townsell, 24, a bartender at the outdoor Jury Duty bar, watched as a bloodied, apparently shell-shocked Ryvkin was loaded into an ambulance.
She said she was shocked as the late-morning violence unfolded just steps from NYPD headquarters.
“It’s scary – there’s a police department right there,” Townsell said.
“You wouldn’t think acts of violence like this would happen in an area like this, where there are cops everywhere. There’s not anywhere around here that you wouldn’t see a cop, so it’s kinda scary.”
Medics rushed Ryvkin to Bellevue Hospital, where doctors treated him for a stab wound between his lower neck and upper back.
“It’s horrible,” the lifelong New Yorker said. “It feels like New York is not the place to be. It’s very unsafe.”
Meanwhile, Dupree, too, was taken to Bellevue following his arrest for unknown reasons, cops said.
Dupree’s rap sheet includes busts for assault, aggravated harassment, criminal possession of a controlled substance, menacing and resisting arrest, cops said.
His most recent bust was in July for menacing in Harlem, but that case has since been sealed, police said.
His last assault was in June 2012, also in Harlem, but that case has also been sealed, according to authorities.
He has a prior conviction for criminal sale of a controlled substance and served just over four years in state prison before he was paroled in November 2019, records show.
He previously served about six years for selling drugs before being paroled in October 2013, and spent less than a year in lockup for drug possession until he was paroled in July of 2006, according to the records.