Manhattan

A mugger choked a man who was returning home to his Upper East Side apartment building, sources said.

The thug followed the 30-year-old victim into his building on East 95th Street, near First Avenue, on March 20 and threatened to shoot him as he pressed a hard object into his side.

The mugger, who is 25-40 years old, choked the victim until he was almost unconscious, rifled through his pockets, but fled empty-handed.

The 6-foot-tall attacker was wearing a brown coat, white T-shirt, blue jeans and black dress shoes.

Brooklyn

Three teens were shot, one fatally, in East New York last night, cops said.

The gunplay at Pennsylvania and Sutter avenues around 7:35 p.m. left a 19-year-old man dead.

A 14-year-old boy was struck in the back and 18-year-old man was shot in the left leg. Both were taken to Brookdale Hospital in stable condition.

No motive was given.

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A good Samaritan helped cops nab a pair of petty crooks who broke into a car in Fort Greene, authorities said.

Frederick Soloman, 39, threw a brick through the window of a parked car on Waverly Avenue near Greene Avenue at 10:30 a.m. Thursday, police said.

A witness spotted him fleeing with a lookout, Mervin Leggett, 54, sources said.

The suspects were charged with criminal mischief and petit larceny.

Staten Island

Cops blew the whistle on a slasher after a neighborhood basketball game turned violent at the Mariners Harbor Houses, authorities said yesterday.

Several teens were playing on Holland Avenue near Richmond Terrace Thursday at 6 p.m. when a fight broke out, cops said.

Terrel Thompson, 16, pulled a boxcutter and slashed another player on the arm, sources said.

A witness called 911 and wrestled the weapon from Thompson’s hand, sources said.

Thompson was charged with assault, weapon possession and harassment, said a spokesman for DA Daniel Donovan.

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A teen was arrested after blowing up a mailbox at a home in Richmond Town, cops said.

A neighbors saw the teen ringing the doorbell of the home on Barbara Street near Riedel Avenue Wednesday at 6 p.m., authorities said.

When no one answered, Steven Didonato, 19, put firecrackers in the mailbox, cops said.

Moments, later the mailbox exploded, sources said.

The witness called 911 and followed Didonato around the corner to his home, where he was arrested.

He was charged with arson, reckless endangerment and criminal mischief, authorities said.

Queens

Police arrested a motorcyclist after he assaulted cops following a routine traffic stop in Cambria Heights.

Andre Colclough, 35, was cruising and wearing an NYPD riot helmet at Merrick Boulevard near Brookville Boulevard at 10:20 p.m. on March 31 when police noticed he had a faulty brake light and stopped him, sources said.

Colclough told cops that he, too, was an NYPD officer, but later admitted he had been thrown off the force a few years ago, the sources said.

When a cop attempted to place him under arrest, Colclough flailed his arms, kicked his legs and fled across the Belt Parkway into oncoming traffic, authorities said.

It took 10 officers to place him under arrest, cops said.

He was charged with assault, reckless endangerment, criminal impersonation and resisting arrest, said a spokesman for DA Richard Brown.

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Two would-be SUV thieves clubbed a motorist pumping gas at an East Elmhurst gas station, cops said.

Taurean Farmer, 27, and Kashawn Lyons, 23, approached the man from behind at 110th Street and Astoria Boulevard on March 31 at 10:30 p.m., cops said.

Farmer allegedly struck the man on the head as Lyons demanded he turn over his keys, sources said.

The victim wrestled with Lyons and the thugs fled without the keys or the car, police said.

The suspects were soon arrested.

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Police arrested a man at JFK Airport for concealing cocaine in five folded dollar bills, authorities said.

Security agents found the drug in the bills as Stephen Garraity, 32, made his way through a checkpoint, sources said.

Garraity told them the powder was medication.

He then flashed a PBA card and claimed he had been a cop with both the NYPD and the Middletown, NY, police.

Garraity was charged with criminal impersonation and possession of a controlled substance, authorities said.