Authorities are working to identify two people who died Monday in a fiery plane crash at the Tucson International Airport.

The Pima County Office of the Medical Examiner is working to identify the remains found in the wreckage of a twin-engine Beechcraft 300 airplane that airport officials said crashed shortly after takeoff around 12:40 p.m. on its way to Mexico.

The two bodies were extracted from the twin-engine plane Monday evening and sent to the medical examiner, said airport spokeswoman Jessie Butler.

Dr. Greg Hess at the medical examiner’s office said he had not yet made a positive identification as of Tuesday afternoon.

Personnel with the National Transportation Safety Board were investigating the wreckage Tuesday. A preliminary report is usually issued about one week after a crash.

An accident notice posted on the Federal Aviation Administration website listed the fatalities as one flight crew member and one passenger.

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No conclusions have been drawn yet from the investigation, said NTSB spokesman Keith Holloway. A full investigation typically takes more than one year to complete.

The tail number visible in photos of the wreckage, and listed in the FAA accident notice, shows the plane was manufactured in 1985 and is registered to Nogales-based company called KAAZ LLC, according to Federal Aviation Administration records.

KAAZ was incorporated in August 2016 by Luis Moreno Jr., Arizona Corporation Commission records show. A voicemail left for Moreno went unanswered Tuesday afternoon.

Contact reporter Curt Prendergast at 573-4224 or or on Twitter @CurtTucsonStar