QUEENS

* One man beat another to death with a metal pipe on a Jackson Heights street yesterday morning, police said.

The 21-year-old victim – whose name was withheld pending notification of his family – was severely beaten on 74th Street between Broadway and 41st Avenue at 3:15 a.m. His attacker fled.

Cops believe the victim first had possession of the pipe, but it was wrestled from him during the struggle.

The victim died at Elmhurst Hospital.

His attacker remains at large.

* A domestic dispute has landed a city correction employee behind bars yesterday, police said.

Colleen Ellis-Gammon, 38, was arrested in Queens Village at 7:50 a.m. and charged with assault. It was not immediately clear what job she holds with Correction.

BROOKLYN

* Cops yesterday released this photo of a Bedford-Stuyvesant man they say shot and seriously wounded another man last month.

The suspect, Devine Dupree, 22, bumped into the victim in a bodega Feb 2. and the two exchanged angry words, cops said.

Afterward, Dupree went home, grabbed a gun and searched for the man, finding him at Bainbridge Street and Ralph Avenue in Brownsville, cops said. He allegedly opened fire, hitting the man twice in the stomach.

The victim, whose name was withheld, was recuperating. (lcf)

* A Flatbush man was slain in front of his apartment building early yesterday, police said.

Mark McGregor, 28, was shot twice in his back on Tilden Avenue at 12:22 a.m., authorities said.

McGregor was rushed to Kings County Hospital, where he died 3 ½ hours later.

Less than 10 minutes after McGregor got to Kings County, a 35-year- old man walked into Brookdale Hospital with three bullet wounds, two in his back and one in a leg. He was listed in serious condition.

Police sources said investigators are probing the possibility that the two men shot each other.

* A city correction officer is facing assault charges, police said yesterday.

Lorenzo Witherspoon, 50, who is assigned to Rikers Island, was arrested in Park Slope while off duty at 7:28 p.m. Sunday after what police sources described as a domestic incident.

* Police are investigating the shooting of a 19-year-old man at an East New York housing project.

The unidentified man was gunned down inside 215 Wortman Ave. in the Linden Houses at 5:56 p.m. Sunday.

He was found, with a gunshot wound to his head, inside a second-floor stairwell and was rushed to Brookdale Hospital, where he died.

The victim did not live in the building, and police are still searching for the shooter. The motive was not known.

* A woman made off with cash from a Bay Ridge bank yesterday after she slipped a note demanding money to a teller.

The robbery took place at 3:29 p.m. in the Chase branch on 18th Avenue and 65th Street. (lcf)

THE BRONX

* A High Bridge man apparently fell to his death from a fire escape yesterday after beating his live-in girlfriend and trying to flee cops, police said.

Luis Castillo, 26, allegedly hit the woman twice in the head with a pistol during an argument in their Anderson Avenue home at around 3:45 a.m. When cops were called, Castillo fled out a window onto a fire escape, but lost his footing and plunged to his death in an alleyway.

During an initial search, police did not find Castillo’s body because it was too dark outside, police said. Later that morning, the building’s super made the grisly discovery and notified police.

The woman, in her 20s, was treated at Lincoln Hospital. (lcf)

* A city firefighter was arrested for drunken driving, police said yesterday.

Gregory Penny, 32, was nabbed at the corner of East Tremont and Otis avenues at 10:15 p.m. Sunday after a fender bender, authorities said.

No one was injured in the accident.

* Cops are investigating racist scrawls found yesterday morning on a wall inside a Parkchester building.

The anti-Semitic and anti-black messages were discovered at 9 a.m. inside the stairwell of 650 Holland Ave., police said.

* A man’s body was found in the courtyard of a High Bridge building.

The unidentified man – believed to be in his 30s – was discovered with severe head trauma in the yard of 990 Anderson Ave. at 7:17 a.m.

The Medical Examiner’s Office will perform an autopsy to determine the cause of death, but police sources suspect the man may have jumped. (m, s)

MANHATTAN

* One man shot another in East Harlem during an argument over drugs yesterday, police sources said.

The gunfire erupted inside a takeout restaurant at 2163 Second Ave. at 1:33 p.m. after the 35-year-old victim and the gunman fought over marijuana, cops said.

The victim was shot once in the arm and once in the leg. He was taken to St. Luke’s Hospital in stable condition. The gunman was at large.

* A 19-year-old man was shot near a Washington Heights street corner early yesterday, police said.

The victim was at 184th Street and St. Nicholas Avenue at 5:48 a.m., when he was shot once in the lower back and once in the buttocks following an argument.

He was taken to Harlem Hospital in stable condition.