A ribcage, an elbow and a leg were recently found in Calvert Vaux park, near where a foot and hand were discovered in January. View Full Caption Shutterstock

GRAVESEND — The skeletal remains of a chest, leg and elbow were found in Calvert Vaux Park near where three birdwatchers in January found a decomposed right hand in the sand and police found a foot, DNAinfo New York has learned.

On a recent Sunday, three teens who ventured from the beach into the woods to urinate found a skeletal ribcage and spine, sources said.

The grisly scene was roughly 1,000 yards from the spot where the hand, lying palm up, and the foot, severed with a "smooth cut" above the ankle, were recovered on Jan. 4, sources said.

After the teens found the ribcage, police conducted another canvass of the area and found a leg on the ground and an elbow hanging in a tree about 40 yards away.

Investigators believe all the parts are from the same body, although they have yet to identify the victim, or even determine the gender, sources said.

The victim was likely killed and their body was disposed of in the bay, sources said. The body parts may have washed up on shore and been dragged by animals, they added.

Investigators are asking anyone with information about the case to call Crime Stoppers at 1-800-577-TIPS. All calls will be kept confidential, police say.