A blazing fireball lit up the dark skies of Arctic Finland for five seconds, giving off what scientists said was "the glow of 100 full moons" and igniting hurried attempts to find the reported meteorite.
Finnish experts were scrambling to calculate its trajectory and find where it landed, according to Tomas Kohout of the University of Helsinki's physics department, who said Thursday night's fireball "seems to have been one of the brightest ones".
It produced a blast wave that felt like an explosion about 6:40 p.m. (1640 GMT) and could also be seen in northern Norway and in Russia's Kola peninsula, he told The Associated Press on Saturday.
Footage of the reported meteorite was filmed near Lohtaja near Kokkola and uploaded to Youtube.
It might have weighed about 100 kilograms (220 pounds), according to Nikolai Kruglikov of Yekaterinburg's Urals Federal University.
The Norwegian meteorite network said the fireball "had the glow of 100 full moons" and likely was going northeast, perhaps "to the Norwegian peninsula of Varanger," north of where the borders of Russia, Finland and Norway meet.