Two women were stabbed to death in a Brooklyn apartment building, cops said Sunday.

The building on 2nd St. near Fifth Ave. in Park Slope was previously the scene of a a bloody murder-suicide in 2024.

On Saturday, cops responding to a 7:56 p.m. 911 call for an assault found a 59-year-old woman dead inside the building from stab wounds all over her body.

As they searched the premises, police then found a 23-year-old woman dead who had also been stabbed multiple times.

The victims’ named were not immediately released. Cops have made no arrests.

The women were killed in the same building where Jason Jackson and his girlfriend, Olga Kirshenbaum, both 34, were found shot in the head in their Park Slope apartment in a murder-suicide on Jan 24, 2024. Cops found a handgun next to Jackson’s body, leading investigators to believe he shot Kirshenbaum, then himself.

Saturday’s stabbings happened about 12 hours after a 71-year-old man and a 65-year-old woman were stabbed in an apartment building in Fresh Meadows, Queens. They were rushed by medics from the building on 64th  Ave. near Peck Ave. about 7:55 a.m. to North Shore University Hospital, where both died.