BROOKLYN

* A man held his 18-month-old baby hostage for several hours yesterday after his girlfriend’s family tried to boot him out of their apartment, cops said. Instead of being thrown out, Juan Lorenzo tossed everyone else out of the flat, including his girlfriend and their older child, holding the younger one at knifepoint, police said. Lorenzo eventually surrendered to cops and was taken to Kings County Hospital for evaluation. The baby was OK.

* A bank robber made off with $3,000 from the Brooklyn Heights branch of the Independence Savings Bank on Saturday, police said. The robber passed a note demanding money to the bank teller, who forked over the cash. The thief did not display a weapon, and there were no injuries, police said.

THE BRONX

* A passenger robbed a livery-cab driver at gunpoint early yesterday, police said. The 40-year-old driver picked up a fare at East 163rd Street and Prospect Avenue in Morrisania and drove him to 914 Hoe Ave., about a mile away. When they reached the destination, the passenger pointed a gun at the driver and demanded money. The driver handed over $70. There were no injuries or arrests, police said.

* A cockfighting ring was broken up Saturday night in a raid by police, the ASPCA and the Department of Agriculture. Investigators swooped down on 3400 Park Ave. in Morrisania, collaring 28 people for gambling and illegal drinking. They also issued 65 summonses for minor offenses.

MANHATTAN

* Thieves broke into a jewelry maker’s vault late Saturday and made off with a load of loot. The crooks knocked through an adjoining wall to gain access to a vault in the 11th-floor offices of Sandberg and Sikorski on West 26th Street, cops said. The heist took place at about 11 p.m. It was not immediately known how much the thieves made off with.

QUEENS

* After hunting more than six years for a murder suspect, cops finally got their man. Jorge Hurtado, 30, was extradited to New York on Saturday after he was nabbed in Miami in November. Hurtado, who lived at 34-34 79th St. in Jackson Heights, allegedly stabbed Willy Joya, 24, in the stomach in August 1996 at the corner of 79th Street and Roosevelt Avenue. Joya later died at Elmhurst General Hospital. Hurtado was charged with second-degree murder.

STATEN ISLAND

* A man was critically burned yesterday morning in a fire in a basement apartment on Lewiston Street in the Travis section. Authorities did not release the name of the 56-year-old man, who was taken to Staten Island Hospital. A child was also treated for minor smoke inhalation, authorities said. The cause of the fire was unclear and under investigation, officials said.