BERKELEY -- East Bay Regional Park police found what they believe could be a human body part on a beach in Eastshore Regional Park on Friday.

Around 5:10 p.m., officers responded to the park, just north of Ashby Avenue, after a citizen called in to report that they had found discarded clothes and a body part along the shoreline, Sgt. D. Hall said.

Hall said investigators are fairly certain they know what kind of body part was discovered, but they are not releasing any other information as the investigation into the incident is ongoing.

It is unknown if foul play is suspected.

The Alameda County Coroner is aiding East Bay Regional Park police detectives in the investigation.

Check back for updates.

Contact Katie Nelson at knelson@bayareanewgroup.com and follow her at Twitter.com/katienelson210.