An empty yacht, with the engine was still running and its lights still on, washed up ashore in the Madeira Beach area yesterday around 1pm EST.
From CNN:
The Coast Guard sent out two rescue vessels and a helicopter but was not able to locate anybody.
Adding to the mystery is the fact that the vessel is registered to the federal government, CNN-affiliate WFTS reported.
Deputies from the Pinellas County Sheriff's office are investigating the incident and trying to track down the owner of the boat.