BABYLON, N.Y. (AP) — Four people were charged Wednesday with concealing a human corpse and tampering with evidence in connection with the discovery of body parts in parks on Long Island.

Amanda Wallace, 40, Jeffrey Mackey, 38, Steven Brown, 44, all of Amityville, and Alexis Nieves, 33, who police said is homeless, have not been charged with killing the victims, identified as a 53-year-old man and a 59-year-old woman. The victims' names have not been released.

Each defendant pleaded not guilty to hindering prosecution, tampering with physical evidence and concealing a human corpse. All were released without bail.

According to police, a girl walking to school on Feb. 29 found a severed arm on the side of the road at Southards Pond Park in Babylon, about 25 miles east of New York City. Police later found an arm and leg. All of those remains appeared to belong to the 53-year-old man, police said.

The following day, a cadaver dog located the head, an arm and parts of two legs. Those appeare to be from the 59-year-old woman, police said.

Additional remains, found Tuesday in nearby West Babylon and in a state park, belong to the same two people, police said.

The four defendants were arrested after police executed a search warrant at the Amityville home that Wallace, Mackey and Brown share.

Newsday reported that during separate arraignments in Suffolk County District Court, Assistant District Attorney Frank Schroeder said authorities have significant evidence against the four, including meat cleavers, butcher knives, blood and video surveillance. He did not specify where the weapons and blood were found.

Mackey's defense attorney, John Halvorson, said, “We look forward to fighting these charges.”

Brown's attorney, Ira Weissman, said, “Steven Brown didn't kill anybody.” Weissman said he could not comment on the specific charges Brown faces, as he has not seen the evidence.

Wallace's attorney, Keith O'Halloran, said his client “looks forward to defending herself in court.”

A message seeking comment was sent to Nieves' attorney.

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