Russia's Emergencies Ministry says a 9-year old boy has become the 45th victim of Tuesday's passenger plane crash in northwest Russia, near the Finnish border.

The ministry said Wednesday the child had died of his injuries. Seven other people were dragged alive from the burning wreckage in Russia's northern republic of Karelia.

Deputy Prime Minister Sergei Ivanov, who oversees Russia's aviation industry, said initial information suggests the pilot made a mistake while trying to land in heavy fog.

The plane, a Tupolev 134, was carrying 52 people, including nine crew members, when it veered off course while coming in to land, clipped some trees and hit a power line before crashing just short of a runway at Petrozavodsk airport, 650 kilometers northwest of Moscow.

Officials have recovered the aircraft's flight data recorders. The plane was flying from Moscow's Domodedovo airport to Petrozavodsk.

The passengers included two Ukrainians, a Swede, a Dutch national and four people with dual U.S. and Russian citizenship. Germany's Foreign Ministry says one victim had German-Russian dual citizenship.

It is the deadliest crash in Russia since Polish President Lech Kaczynski's plane went down near the western city of Smolensk in April 2010, killing all 96 people on board.