A "moderately decomposed" corpse was discovered Monday by a cleanup volunteer who was taking part in the eight annual Day of Service on Martin Luther King Jr. Day. The discovery occurred along the Martin Luther King Jr. Regional Shoreline in Oakland, and the body was spotted in the "mudflats between Arrowhead Marsh and the boat launch" in San Leandro Bay, according to an East Bay Regional Parks spokesperson who spoke to the Chronicle.

There was no obvious indication of foul play, but an autopsy will now occur by the Alameda County Coroner. According to the Contra Costa Times, the body was damaged in the storm, possibly by hitting rocks.

Says parks spokesperson Carolyn Jones in a statement, "On this day, of all days, and in this particular park ... it's especially tragic. Obviously, we all feel for the victim and his family whoever they may be and the people at the park today who were there."

The body reportedly belongs to a male in his 30s or 40s who was partially clothed, and no other description has been given. It seemed likely that the body washed ashore here from elsewhere, and a cause of death will have to be determined.

ABC 7 adds that "hundreds" typically participate in the volunteer cleanup events, which involve the pulling of weeds and invasive plants in various parks and gardens in the East Bay.