MOSCOW (Sputnik) — According to the statement, a search-and-rescue effort is hampered by poor weather conditions.
"A MiG-31 plane from the Eastern Military District disappeared from radar screens today [Friday] at 06.38 Moscow time [15:38 GMT]," the ministry said in a statement.
"The aircraft was coming back to its base in the Kamchatka Territory after a routine training flight," the statement said.