A fiery plane crash at Joliet Regional Airport killed a couple from Wisconsin, and federal investigators are still trying to determine what caused the crash.

The office of Will County Coroner Patrick O'Neil said the victims have been tentatively identified as 52-year-old Deborah Loiselle and 50-year-old Stuart Seffern of Madison. The coroner's office said autopsies are planned Saturday.

The small plane was landing just before 9 p.m. when it burst into flames, authorities said.

The plane took off from Buffalo Niagara International Airport in New York, airport officials said.

A spokeswoman for the Federal Aviation Administration said the plane was a Lancair. Such planes are typically purchased as kits and home-built.

Representatives from the FAA and the National Transportation Safety Board are investigating.

Joliet is about 30 miles southwest of Chicago.