US embassy in Russia tells Americans to 'have an evacuation plan' that does not rely on government assistance

The U.S. embassy in Russia cautioned Americans on Sunday to have evacuation plans.

"There have been threats of attacks against shopping centres, railway and metro stations, and other public gathering places in major urban areas, including Moscow and St. Petersburg as well as in areas of heightened tension along the Russian border with Ukraine," the embassy said.

"Review your personal security plans," the embassy said. "Have evacuation plans that do not rely on U.S. government assistance."