He killed eight kids and two mothers in one of the city’s most infamous mass shootings, and as soon as he was sprung from prison in January, Christopher Thomas told authorities he was headed to his mom’s Bronx home — which is right next to a children’s day-care center.

“How [can] they release a baby killer like that?’’ aghast local resident Herman Soto said Sunday. “[Thomas] ain’t gonna be safe round here. No one wants a baby killer living here.”

Thomas, 68, was freed from upstate Shawangunk Correctional Facility after serving more than 32 years for the so-called Palm Sunday Massacre in 1984.

At the time of his release, Thomas told parole officials that he would be living at the Beck Street home of his 87-year-old mom. A second day-care center is just five doors down.

It is unclear how long he may have stayed with his mom, who told cops in 1984, before her son was busted in the case, that he sodomized and tried to rape her. A state parole rep said Thomas is now living in Queens.

Thomas was convicted of manslaughter in the massacre after a Brooklyn jury determined he was too whacked out on cocaine to warrant murder raps.

The only person seen entering the apartment of Thomas’ mom Sunday was a young woman who snarled, “Get the f–k out of here!”

A message left at a phone number listed for the mother was returned — but only heavy breathing was heard over the receiver before the line went dead.