(Greensburg, Ind.) - The four people killed in Sunday night's plane crash in Decatur County will be laid to rest Friday.
Visitation for Don and Barbara Horan and Stephen and Denise Butz will be Thursday 4:00-9:00 p.m. at St. Mary's School in Greensburg. Funeral services for the two couples will be held at 10:00 a.m. Friday in the Greensburg High School gym.
The investigation into Sunday's deadly plane crash in Greensburg will take at least six-months to complete.
A spokesman with the National Transportation Safety Board told The Indianapolis Star a typical investigation takes anywhere from two days to several weeks, but because of the complexity of the aircraft involved in the crash, it will take longer.
Investigators will also look at any mechanical problems, the weather, Donald Horan's flight history and medical records in determining what caused the plane to crash.
Much of the plane wreckage was moved to indoor storage at the nearby Decatur County Fairgrounds Tuesday.
The couples, all Greensburg area residents, were on a return flight home from Destin, Florida when the crash occured.