Bortnikov

The Kremlin said for the first time on Nov. 17 that a bomb had ripped apart a Russian passenger jet over Egypt last month and promised to hunt down those responsible and intensify its air strikes on Islamist militants in Syria in response. 

According to Russian officials, the cause of the crash of the Kogalymavia airplane in Egypt's Sinai peninsula on October 31 was a terrorist attack.

The Airbus A321 was conducting flight 9268 between the Egyptian resort of Sharm el-Sheikh and Saint Petersburg when it crashed in North Sinai shortly after take-off.

Russian President Vladimir Putin has agreed to suspend all commercial flights to Egypt until an investigation determines the causes of the deadly Russian A321 plane crash, TASS reported on Friday.

A man suspected of being linked to the assassination of Russian opposition politician Boris Nemtsov has killed himself in Grozny, the capital of Russia's Chechen Republic, Interfax reported on Sunday.

Investigators of the assassination of Russian opposition politician Boris Nemtsov are pursuing several lines of inquiry, including a contract killing, the head of the Russian Security Service Alexander Bortnikov has said.

Putin: Politician's murder was "politically motivated"

MOSCOW -- Russian President Vladimir Putin says he believes that the killing of opposition politician Boris Nemtsev last week was politically motivated.