Story highlights A flight data recorder has been found, Sputnik reports

Three children, ages 5 to 17, were among the passengers

Moscow (CNN) All 71 people aboard a Saratov Airlines flight died when the plane crashed southeast of Moscow on Sunday, Russian state news agency Tass reported.

Those on board included 65 passengers and six crew members, the Russian news agency Interfax said. Three children -- ages 5, 13 and 17 -- were among the passengers, state news agency RIA reported.

The Antonov-148 aircraft disappeared from the radar shortly after takeoff from Moscow's Domodedovo Airport and crashed soon afterward, Tass reported. It was headed to the Russian city of Orsk, near the border with Kazakhstan.

Debris was found about 40 kilometers (25 miles) from Moscow's Domodedovo Airport on Sunday.

The plane went down in Ramenskoye District, in the Moscow region, the Russian emergency ministry told CNN.

"The snow is very dense ... the Moscow region has had some of its heaviest snowfall in decades," CNN's Matthew Chance reported from Moscow. "It's not clear at this stage whether weather was factor in this crash."

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