The death toll from a Boeing 737-500 crash in Russia comprises all 44 passengers and six crew according to local safety officials, although so far the cause has not been established.

The Tatarstan Airlines aircraft crashed on landing and was engulfed by fire at Kazan International Airport at 7:26 p.m. local time on Nov. 17. Kazan is about 500 mi. east of Moscow in the province of Tatarstan. The son of the president of Tatarstan is believed to be among those killed.

The aircraft had taken off from Moscow Domodedovo International Airport about an hour earlier. Some news agencies state that it was making a second attempt at landing. Investigators are at the crash site, but no official conclusions have been released. There were reportedly strong wind gusts and some precipitation at the time of the crash. The Russian government has already said it will set up a commission to investigate.

According to the Aviation Week Intelligence Network’s fleet database, Tatarstan Airlines operates a fleet of 20 aircraft. It has a single leased 737-500 that is more than 23 years old. The carrier also operates four leased Airbus A319s, 12 leased Cessna 208B Grand Caravans, two Tupolev TU-154Ms, and a Yakolev YAK-42D.

Formed in 1999, Tatarstan Airlines primarily serves destinations in Russia and the former Soviet republics, and also has flights to Prague and Istanbul.