A father and son dispute inside a posh Lenox Hill condo turned deadly Wednesday morning when an unhinged man slashed his dad and then jumped to his death out of the window of the family’s 46th floor apartment, police sources said.
Mark Citrin, 27, began squabbling with Niles Citrin, 65, inside Bristol Plaza at 200 East 65th Street at around 6:55 a.m., cops said.
Their argument quickly escalated, and the younger Citrin pulled out a knife and slashed his father – a founding partner at Manhattan accounting firm Citrin Cooperman – several times in the head and face, and then locked himself in his room, sources said.
NYPD’s Emergency Services Unit arrived on scene to coax him out of the room, but he refused, police sources said.
“He’s yelling ‘No!’” a police source said. “He was refusing to come out voluntarily.”
A cop watching Citrin from another floor said he then began to toss items out of the bedroom window, including sneakers, an umbrella, and a backpack before taking the fatal plunge.
A broken printer, ink cartridges and a book titled “Modernist Cuisine,” were also believed to be tossed before Citrin took the fatal plunge.
The young man’s body landed on the rooftop at the neighboring Bank of America building, sources said.
It was not immediately what triggered the argument and caused Citrin to fly off the handle, but investigators found his room littered with various types of narcotics residue, according to sources. He was prescribed Prozac, sources said.
“It appears he’s just an idiot kid who felt daring,” a law enforcement source said.
Niles Citrin, with his wife by his side, was taken to Bellevue Hospital where he was listed in stable condition, police said. He refused to comment when reached by phone by The Post.
His son studied economics and finance at Emory University where he graduated from in 2009 and recently worked as a waiter at Gallagher’s Steakhouse in Midtown, according to his Facebook page.
Niles’ wife was also in the apartment at the time of the incident, but she was not harmed.
The accounting firm Citrin Cooperman, which was co-founded in 1979 by Niles, is headquartered in New York City. The firm ranked 22nd on Accounting Today’s 2015 Top 100 Firms list, according to the company’s website.