A Brooklyn woman who was fatally beaten by three friends, after one of them accused her of sleeping with her boyfriend, identified her attackers to police from her deathbed, officials said Tuesday.

The scorned lover and her two roommates were arrested Friday, a day after 42-year-old Vanessa Rivera died in the hospital.

The deadly beatdown occurred Jan. 21 around 4 p.m. at the Surfside Garden Houses in Coney Island after Jaris Sweet, 29, accused Rivera of having sex with her boyfriend, sources said.

Sweet and her roommates, Dewayne Maddox, 22, and Mayra Oliveras, 37, then teamed up for the savage attack, cops said.

All three were arraigned in court Saturday on charges of gang assault, assault, attempted assault, menacing and harassment.

The Brooklyn District Attorney could also be weighing murder charges.