Nantucket Police are investigating a series of home intruder incidents.
WBZ-TV reports a male suspect apparently entered two homes on Jonathan Way last Friday.
He was said to be wearing "preppy clothing" in one house, but was naked in the other dwelling, according to police.
A third residence on Sandsbury Road said there was a knock on a window, but no one came inside.
Nantucket authorities are reminding people to secure their doors and windows before going to bed.