MANHATTAN

*** A man was found hanged from a tree above Riverside Drive in Harlem yesterday, police said.

He was dangling about 70 feet above the roadway but obscured by trees at 125th Street.

The legs of the unidentified man, white and in his 30s, were spotted by a homeless man at about 4:50 p.m., but cops said he had been dead for six hours. Cops labeled the death a suicide, but it was unclear if the man left a final note.

*** Police are hunting a man who killed a Pakistani immigrant at a Hell’s Kitchen gas station last year.

The suspect struck at the ExxonMobil garage at the corner of 51st Street and 11th Avenue, where Syed Ahmed, 50, was found face down on a blood-soaked pillow on May 6, 2005.

Ahmedworked as an overnight security guard at the station and lived there during the day, police said.

Construction workers found his body when he didn’t let them onto the site at daybreak. Ahmed was rushed to St. Vincent’s Hospital, where he was pronounced dead.

*** Two Brooklyn youths were busted for gun possession aboard a subway train in Inwood, police sources said yesterday.

A cop patrolling a southbound A train in the station at West 207th Street and Broadway found Ulises Rojas, 17, and Jamie Boomer, 20, fast asleep at 1:40 a.m. on Wednesday, sources said.

The officer noticed bulges in their pockets and realized they were carrying guns, police sources said.

Rojas had an unloaded .25 caliber handgun and a dagger, and Boomer was carrying an unloaded .380 pistol and pot, according to a Criminal Court complaint.

Boomer is charged with weapons possession and possession of marijuana. Rojas is charged with two counts of weapons possession, said a DA spokesman.

STATEN ISLAND

*** Cops closed an illegal auto-repair shop in Stapleton, authorities said yesterday.

Mervyn Haynes, 48, was arrested at the garage on Broad Street near Quinn Street at 4:45 p.m. on Thursday.

Haynes is not registered with the state Department of Motor Vehicles, nor does he have a license to run an auto-body shop, although he had been warned in the past to obtain a license, authorities said.

Haynes also allegedly admitted he accepted cash to fix a Honda parked at the location.

He is charged with two counts of falsifying business records, failure to maintain or produce records and failure to display or affix a registration number, according to a spokesman for DA Daniel Donovan.

THE BRONX

*** Police are asking for the public’s assistance in finding this Highbridge teen who vanished last month.

Christina Coleman (above), 16, was last seen leaving her home on Teller Avenue near East 165th Street at 3 a.m. on July 22, cops said.

Police sources said the teen had run away from home several times before.

*** A man was stabbed during a fight on Pelham Parkway, police sources said yesterday.

Kenneth Hodges, 18, allegedly knifed the 19-year- old victim on Bronxdale Avenue near White Plains road at 11:16 p.m. on Thursday, sources said.

The victim was taken to Jacobi Hospital in stable condition. Hodges was arrested a short time later.

BROOKLYN

*** An off-duty NYC Transit security guard was arrested after he caused a ruckus in a Downtown Brooklyn clothing store, authorities said yesterday.

Lynell Robinson, 36, allegedly got out of line inside the Atlantis Clothing Store on Jay Street near Willoughby Street at 2:55 p.m. on Thursday, law-enforcement sources said.

That’s when Robinson began unfolding neatly displayed shirts and throwing them on a nearby rack, authorities said.

A store clerk witnessed Robinson’s behavior and asked him if he needed assistance. Robinson told the man no, and continued to make a mess, sources said.

Moments later, Robinson bellowed, “Who’s gonna stop me?” prompting the shop worker to threaten to call police.

Then Robinson, a property protection agent for NYC Transit, pulled a badge and told him, “I’m a cop.”

The employee flagged down a uniformed officer walking by, and Robinson fled into the subway station at Jay and Fulton streets.

The cop caught up with him a block away on Lawrence Street and arrested him for criminal impersonation of a police officer.

*** Crooks broke into a Flatbush grocery store and made off with an undetermined amount of cash and cigarettes, police sources said yesterday.

The 49-year-old worker at the Ocean Grocery Deli on Church Avenue near Ocean Parkway discovered the break-in at 5:50 a.m. Thursday, sources said.

*** A Flatbush man came home and found two masked men in his apartment, police sources said yesterday.

The 24-year-old victim walked into his Ocean Parkway pad at 2:54 p.m. on Thursday to find a stranger in his lavatory, sources said.

He confronted the disguised intruder, who screamed at him in Russian and punched him, police sources said.

At the same time, the second suspect grabbed the victim from behind and stabbed him in the right arm, sources said.

The thugs then quickly fled. The victim was rushed to Coney Island Hospital in stable condition.