Multiple arrests have been made in connection with human body parts discovered last week in a Long Island, New York, park, a source close to the investigation told NBC New York on Tuesday.

Homicide detectives searched a home on Railroad Avenue in Amityville Tuesday morning, according to NBC New York. The home is about a 15-minute drive west from Southards Park Pond in Babylon Villages, where six body parts were recovered.

State Police confirmed they processed another crime scene in Bethpage State Park, a roughly 10-minute drive north from Railroad Avenue, in connection with the case, NBC New York reported.

The Suffolk County Police Department declined to confirm the arrests or the house search, writing in an email, “We don’t have any updates on the case at this time.”

A student walking to school found a “severed left arm” at Southards Park Pond Thursday morning. The police were called, and a cadaver dog discovered a leg and another arm in the area.

A head, parts of a leg, and a third arm were later recovered from the park. The body parts appeared to have been discarded recently.

Investigators believe the body parts belong to at least one man and one woman. DNA testing is being carried out to identify the victims. Gang-related activity has not been ruled out.