The man accused of killing his MTA conductor girlfriend in Brooklyn was found dead Friday night after a five-hour standoff with police in New Jersey.

Zire King, 44, had been holed up inside a Hackensack home that was surrounded by a SWAT team at about 2 p.m. Authorities found the fugitive dead around 7:30 p.m., according to law enforcement sources.

King’s death concludes a days-long manhunt after police named him the lead suspect in Monday’s the fatal shooting of Jacqueline Dicks, 41.

“He’s gone, he’s dead and my mother can sleep easy now,” Dicks’ daughter, Tatiana Dicks, 24, told The Post Friday night.

It isn’t immediately clear how Zire died — there were no apparent signs that he had been shot, sources said.

Police put the residential street on lockdown as they swarmed the area outside the house on Friday afternoon, and rattled residents watched as cops fired tear gas inside and tried to talk to King through a bullhorn.

With no apparent success, officers eventually stormed the home.

“I heard banging and banging and banging. Then they got the door down. Once they got it down they went right in,” said Eddie Clemens, 67.

King was accused of gunning down Dicks Monday night, just blocks from her East New York home.

He was initially questioned by police on Tuesday but was then released after saying he had dropped Dicks off near her home on Elton Street near Cozine Avenue, before walking to a store and hearing a gunshot and seeing a car speeding away.

King was later declared the suspect when cops found surveillance footage that contradicted his story and discovered the murder weapon in the trunk of his car.