It has the earmarks of an accident…. but you always wonder.

UPDATE: Looking like the pilot was a pitcher for the New York Yankees — Cory Lidle.  The plane was registered in his name, and his passport was found on the street below.

ANOTHER UPDATE:  I note from the Cory Lidle link above that the Yankees placed Cory Lidle on their "bereavement list" on August 18.  A "bereavement list" is described in the Baseball Glossary:

"A player who is grieving (due to the death of a family member or friend) can be placed on the bereavement list with league permission. He must stay on the list for at least three days and be activated within ten days. His roster spot can be filled by another player."