Julio Acevedo, the man suspected of being the hit-and-run driver in the accident that killed an Orthodox Jewish Brooklyn couple and their newborn son over the weekend, is an ex-con who served time for killing a man who inspired rapper 50 Cent to use the moniker.

Police are searching for Acevedo, 44, who authorities believe was the man who drove the BMW that plowed into the taxi cab that Raziel and Nachman Glauber were riding in early Sunday morning.

The cab was sitting at a stoplight when the accident occurred. Police said the suspect, who was not the owner of the BMW, fled the scene on foot.

“It was absolutely freezing, and this guy was wearing a sweater, smoking a cigarette. He looked very nervous,” Williamsburg photographer Shimon Gifter, who witnessed the hit-and-run, told the New York Post. “He just looked at the crash and went back the same way he came, up Kent Avenue. He just disappeared.”

Raziel Glauber, 21 was ejected from the cab and killed, along with her husband, Nathan, also 21. She was pregnant, and the baby initially survived the Sunday morning crash and was delivered via C-section, but died early Monday morning.

The Glaubers were en route to a Brooklyn hospital because Raziel, who was seven months pregnant, was experiencing labor pains.

The deaths hit the Orthodox Jewish community hard, with estimates ranging from hundreds to thousands of mourners who attended funerals for the Glaubers.

"It’s a great tragedy for the community,” said Rabbi Zalman Leib Teitelbaum, of the Khal Yitav Lev synagogue in Williamsburg. “We have to hold on together and see what we can do to make things better. This is a very, very big tragedy.”

Raziel Glauber’s brother, Nuchem Yoel Silberstein, called her “the crown of the family."

He told mourners, “We were sitting together last night and today she’s gone.”

Silberstein said his brother-in-law was a model husband.

“We can all learn from him how to treat a wife,” he said. “The way he treated her was special.”

Acevedo killed Kelvin “50 Cent” Martin in 1987, the Post reported, landing the suspected hit-and-run driver in Attica prison for the slaying.

South Jamaica, Queens-born rapper Curtis “50 Cent” Jackson was inspired to use 50 Cent as his stage name from Martin, according to the New York daily.

As cops continue to search for Acevedo, friends of the 44-year-old told the New York Daily News that he was trying to come up with enough cash to hire a lawyer and then he would surrender to police.

“He’s willing to cop out to whatever it is. He’s admitting his responsibility,” friend Derrick Hamilton told the paper.

Acevedo allegedly told friends that he went for a joyride in Williamsburg, Brooklyn, when he saw an old enemy. The nemesis was chasing Acevedo around the neighborhood when the 44-year-old slammed on the gas before crashing into the taxi cab, according to the Daily News.

The hit-and-run suspect was described by the Post as having a “lengthy” rap sheet. The Daily News said that included a DWI arrest last month.

Acevedo allegedly had a blood-alcohol content of .13, above the legal limit of .08 in New York, after driving home from a baby shower in Brooklyn.

Police claimed he was slurring his words and driving erratically. He is scheduled to appear in court on the DWI charges April 10.