Three people were killed in a small plane crash on Sunday in western Massachusetts, federal and local authorities said. The twin-engine four-seater, a Beechcraft Baron 55, went down in a wooded area near Greenfield, according to a statement from the National Transportation Safety Board. The victims were on Monday identified as flight school owner, 53-year-old Frederika Ballard, 68-year-old instructor William Hampton, and student pilot Chad Davidson, 29, according to CBS News. The National Transportation Safety Board is investigating what caused the crash in the Leyden Wildlife Management Area near Greenfield just before noon.

Editor’s note: This story has been corrected after an earlier version, updated after publication, identified victims from a separate plane crash Sunday.