Mercer Island Police Department (MIPD) detectives are investigating a theft of items from an unlocked moored boat along the Island shoreline on the morning of Sept. 27.

A male suspect’s activities were captured on the vessel’s video surveillance system at approximately 3:30 a.m., according to the MIPD. The suspect arrived and departed on a personal watercraft and stole approximately $850 worth of items.

MIPD’s Marine Patrol reminds lakefront property owners to secure valuables for the winter, including vessels and their items, kayaks, paddle boards and other items on docks.