Two people are killed and four injured in a mass shooting outside Russia's Federal Security Service headquarters on Moscow's Lubyanka Square. The shooter is also killed.
Russia's FSB state security agency says it has arrested a U.S. citizen "caught spying" in Moscow. According to former CIA officials the arrest was done as a retaliation for the arrest of alleged Russian spy Maria Butina.
Emergency teams comb snowy fields outside Moscow Monday for debris from a crashed Russian airliner and the remains of the 71 people who died. Transport Minister Maksim Sokolov says that emergency teams have already found the plane's flight data recorder, which will help them determine the crash's cause, but notes that the search for the victims' remains will take at least a week.
Finland and Russia agree to impose temporary restrictions at two Arctic border crossing points on the Finnish–Russian border following an increased flow of asylum seekers from Russia to Finland. Under a deal clinched by Russian President Vladimir Putin and Finnish President Sauli Niinistö in Moscow, crossings at two popular entry points, Salla and Raja-Jooseppi, will be reserved only for Finnish, Russian and Belarusian citizens and their family members for a period of 180 days.