A missing mom whose rotting body was found buried in a shallow grave on a Queens beach over the weekend was shot repeatedly - and investigators believe she may have known her killer, cops and sources said Monday.

Seraphina Pereira, 35, was last seen around 11 a.m. last Monday leaving her Beach 54th Street home - about a half-mile from Rockaway Community Park in Edgemere, where her body was found wrapped in a blanket in a shallow hole five days later, police said.

Her remains were already decomposing in the pit when police descended on the scene around 9:45 p.m. Saturday, law-enforcement sources added.

4 Seraphina Pereira vanished from her home Oct. 19, days before her body was found in a shallow grave at Rockaway Community Park in Edgemere. Facebook/Seraphina Pereira

4 Investigators believe Pereira may have known her killer, sources said. DCPI

Pereira had suffered gunshot wounds to the head, neck and torso, and her death was ruled a homicide, according to the city medical examiner's office.

The Queens mom frequently posted about her children on Facebook - most recently sharing a 5th birthday post for her son, just days before her disappearance.

About a week earlier, she shared a selfie with her  lil diva  daughter, who she said did her make-up, as both posed in green eye shadow.

4 Pereira was shot in the head, neck and torso, and her death was ruled a homicide, according to the city medical examiner's office. Diego Luzuriaga / FreedomNewsTV

4 Police are continuing to investigate and no arrests have been made in connection to Pereira's death. Diego Luzuriaga / FreedomNewsTV

No arrests had been made in connection to Pereira's death by Monday and an investigation was underway.
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