THE BRONX

* Two teens led a pair of detectives on a car and foot chase through the streets of Longwood, law-enforcement sources said yesterday.

The two plainclothes cops were riding in an unmarked car north on Union Avenue at 3 p.m. when they spotted a 1993 Mazda Protégé with defective tail light and decided to stop it.

The Mazda began to pull over at the corner of Union Avenue and East 158th Street, but then sped up Union, law-enforcement sources said.

The detectives, assigned to the 40th Precinct, followed the vehicle until it got stuck in traffic. That forced the two teens in the car to jump out and run.

One of the cops caught up with the Mazda’s driver, Hector Vega, 16, about five blocks away, but lost the other teen in a building.

Police received an anonymous tip about two hours later that led them to 720 Westchester Ave., the home of Saustow Gonzalez, 18.

The teens were charged with reckless endangerment and reckless driving. Police were looking into whether the Mazda was stolen.

* Police are investigating the death of an Edenwald infant, authorities said yesterday.

The 2-month-old boy, whose name was not released, died 35 minutes after being rushed to Our Lady of Mercy Hospital from his home at 1440 E. 222nd St. at noon on Thursday, police said.

Cops, who responded to a call about an unconscious baby, said the child bore no visible injuries and they did not suspect any criminality.

STATEN ISLAND

* The NYPD yesterday released a photo of the missing cop (above) whose disappearance was reported in The Post on Tuesday.

Officer Ronald Shepard, 35, was last seen around 2 p.m. last Saturday, when he said goodbye to his wife and 1-year-old child and left for work at the 120th Precinct in St. George, police sources said.

When he didn’t show up for his 4-to-midnight shift, cops launched a search, using bloodhounds and helicopters.

Shepard’s car was found Tuesday outside 51 Allen Place in the Huguenot section, two blocks from the Atlantic Ocean, where bloodhounds followed his scent to the edge of the shore, police said.

Shepard is 6-foot-1, weighs 180 pounds, has a light complexion, a medium build, brown hair and brown eyes.

QUEENS

* A 21-year-old man was shot in the face and left to die in the doorway of a Far Rockaway building early yesterday, police said. Shaheem Mays, of Brooklyn, was already dead when cops found him in the entrance of 12-70 Redfern Ave. at 1:20 a.m., authorities said.

BROOKLYN

* A 25-year-old man was shot and killed on a Bedford-Stuyvesant street, police said yesterday.

A gunman opened fire on John McFadden in front of 292 Ralph Ave. around 9:30 p.m. on Thursday night.

McFadden, of Wyona Street in East New York, was hit once in the head and rushed to St. Mary’s Hospital where he died 35 minutes later, police said.

* Police are investigating the death of a man whose body was found in the lobby of a Brownsville building yesterday.

The 47-year-old man, whose name was not released, was discovered at the bottom of a staircase in the lobby of 414 Sutter Ave. at 5 a.m., authorities said.

MANHATTAN

* A swastika was etched on an elevator wall inside a Times Square apartment building. The scrawl was discovered at 1:05 a.m. yesterday.