PHILADELPHIA (CBS) – An investigation is underway into a gruesome discovery in the Delaware River Saturday morning.

Officials say a fisherman found human remains floating in the river near the 4800 block of Fort Mifflin Road near 8 a.m.

The Marine Unit removed those remains, which appear to be partially decomposed human skeleton, according to officials.

The medial examiner is working to identity the victim as the investigation continues.

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