BROOKLYN

*** A Queens man was gunned down in a hail of bullets in Bedford-Stuyvesant as he left his girlfriend’s house to buy ice cream for his young son, police and family said yesterday.

Terrence Gaynes, 37, (above) of 199th Street, in Jamaica, left his girlfriend’s residence late Friday and was met with a fusillade at Marcus Garvey Boulevard and Monroe Street at about 11:20 p.m.

He was shot approximately a dozen times in the head and body and was taken to Woodhull Hospital, where he was declared dead 20 minutes later.

Gaynes had been living with a sister since his release from a drug treatment center Tuesday.

He had spent time in a Correction Department “boot camp” before that, a source told The Post.

Gaynes also had a 12-year-old daughter with another woman.

MANHATTAN

*** Detectives are probing the suspicious death of an elderly man whose decomposing corpse was found inside his Chinatown apartment yesterday morning.

Juan Crespo, 75, was found by cops at 9:33 a.m. lying face down in his bed, inside his second-floor apartment at 173 Henry St. after neighbors complained about a disturbing smell, sources said.

It was not immediately clear when he was last seen alive, but sources said Crespo is believed to have died more than a week ago.

While there were no clear signs of a struggle or forced entry, detectives were nonetheless probing whether the discovery of broken knife inside the apartment might indicate foul play.

Part of the knife’s blade was missing and might be imbedded in the dead man, sources said.

The medical examiner will conduct an autopsy.

*** Five people, including two cops, were injured near Times Square early yesterday when a driver rear-ended a police car and attempted to flee the scene, causing a smash up with another car and a city bus, police said.

None of the victims were seriously hurt and the driver was arrested.

The chain of events unfolded at 12:45 a.m. when a police car occupied by two uniformed cops assigned to the Midtown South Precinct was traveling west on 42nd Street, between Seventh and Eighth avenues, police said.

A 1994 Dodge driven by Rudolph Edwards, 34, smashed into the trunk of their car, police said.

In a bid to flee, Edwards backed up and headed west on 42nd Street toward Eighth Avenue, where he was said to have struck a third car, also a 1994 Dodge, sources said.

That vehicle, in turn, slammed into a city bus carrying three passengers, police said.

The two cops, the 20-year-old driver of the second Dodge and his female passenger were all taken to St. Vincent’s Hospital, while Edwards was taken to Bellevue.

Edwards, of Liberty Avenue, Brooklyn, was charged with assault, reckless endangerment and reckless driving, police said.

STATEN ISLAND

*** A man has been arrested in connection with a violent confrontation that led to the stabbing death of one man and the knifing of two others, one of whom was critically wounded, police said yesterday.

Jason Ivory, 21, of Trantor Place, was arrested following a dispute involving a group of men at 11 p.m. Friday at Forest and Richmond avenues, police said.

The confrontation resulted in an 18-year-old being stabbed several times in the neck and dying at the scene, police said.

A 17-year-old boy was stabbed in the neck and a 27-year-old man was stabbed twice the chest and once in the abdomen.

Both were taken to St. Vincent’s Hospital, the former in stable and the latter in critical condition.