Debris is seen from an Ukrainian plane which crashed as authorities work at the scene in Shahedshahr, southwest of the capital Tehran, Iran, Wednesday, Jan. 8, 2020. (AP Photo/Ebrahim Noroozi)
Rescue workers carry the body of a victim of a Ukrainian plane crash in Shahedshahr, southwest of the capital Tehran, Iran, Wednesday, Jan. 8, 2020. (AP Photo/Ebrahim Noroozi)
Rescue workers carry the body of a victim of an Ukrainian plane crash in Shahedshahr, southwest of the capital Tehran, Iran, Wednesday, Jan. 8, 2020. (AP Photo/Ebrahim Noroozi)
A rescue worker searches the scene where an Ukrainian plane crashed in Shahedshahr, southwest of the capital Tehran, Iran, Wednesday, Jan. 8, 2020. (AP Photo/Ebrahim Noroozi)
Bodies of the victims of the Ukrainian plane crash are collected by a rescue team at the scene of the crash in Shahedshahr, southwest of the capital Tehran, Iran, Wednesday, Jan. 8, 2020. (AP Photo/Ebrahim Noroozi)
Rescue workers search the scene where an Ukrainian plane crashed in Shahedshahr southwest of the capital Tehran, Iran, Wednesday, Jan. 8, 2020. (AP Photo/Ebrahim Noroozi)
Bodies of the victims of the Ukrainian plane crash are collected by rescue teams at the scene of the crash in Shahedshahr, southwest of the capital Tehran, Iran, Wednesday, Jan. 8, 2020. (AP Photo/Ebrahim Noroozi)
Rescue workers search the scene where an Ukrainian plane crashed in Shahedshahr, southwest of the capital Tehran, Iran, Wednesday, Jan. 8, 2020. (AP Photo/Ebrahim Noroozi)
Rescue team work at the scene where an Ukrainian plane crashed in Shahedshahr, southwest of the capital Tehran, Iran, Wednesday, Jan. 8, 2020. (AP Photo/Ebrahim Noroozi)
Debris is seen from an Ukrainian plane which crashed as rescue workers search the scene in Shahedshahr, southwest of the capital Tehran, Iran, Wednesday, Jan. 8, 2020. (AP Photo/Ebrahim Noroozi)
A forensic investigator works at the scene of a Ukrainian plane crash as bodies of the victims are collected, in Shahedshahr, southwest of the capital Tehran, Iran, Wednesday, Jan. 8, 2020. (AP Photo/Ebrahim Noroozi)
A relative of one of flight stewardesses, who were on the board a Ukrainian 737-800 plane that crashed on the outskirts of Tehran, Iran, reacts at Borispil international airport outside Kyiv, Ukraine, Wednesday, Jan. 8, 2020. (AP Photo/Efrem Lukatsky)
A man takes a photo of the arrivals board with the cancelled fight from Tehran after Ukrainian 737-800 plane crashed on the outskirts of Tehran, Iran, at Borispil international airport outside Kyiv, Ukraine, Wednesday, Jan. 8, 2020. (AP Photo/Efrem Lukatsky)