Via the New York Post:

A human skull that may have been used in a bizarre ritual was found on a Bronx beach flanked by multicolored necklaces and with a jar of mercury embedded inside it, The Post has learned.

Knowledgeable sources say the skull was likely stolen from a grave and used in a Palo Mayombe ritual, which was developed by Central African slaves in Cuba and spread to the United States in the 19th century.

At the center of worship is a cauldron filled with human and animal remains, herbs, spices, cemetery soil and branches, considered sacred because it is believed the gods reside in them.

Freedom of religion--ya gotta love it! Happy Independence Day!