A elderly Hyattsville man was found dead Wednesday evening at a marina in Anne Arundel County, authorities said.

According to Maryland’s Natural Resources Police, 70-year-old William Eckert’s body was found around 9 p.m., at the Holiday Hill Marina in Edgewater.

A family friend found him in the water near where his boat was docked, police said. Emergency responders were unable to revive Eckert, who was pronounced dead at the scene.

The case remains under investigation and an autopsy is due to be conducted Thursday to determine the cause of death.