Bust in slay of pregnant ex

The man who allegedly fatally shot his pregnant exgirlfriend shortly after her baby shower in Harlem was busted early Thursday, according to police sources.

Justin Soriano, 40, was picked up at a Bronx home by the NYPD Warrant Squad in connection with the slaying of Shanice Young, 31, at West 128th Street and Frederick Douglass Boulevard at around 1 a.m. Sunday, the sources said.

He was taken to Harlem’s 32nd Precinct, where charges were pending, according to the law-enforcement sources.