Japan has increased security measures across the country and especially at airports after a Russian-owned passenger airliner crashed in Egypt's Sinai Peninsula, the Japanese Chief Cabinet Secretary said Wednesday.

On October 31, a Russian-owned Kogalymavia Airbus A321 with 224 people on board crashed en route from Egypt's resort city of Sharm el-Sheikh to St. Petersburg, with no survivors.

The Russian Security Service (FSB) confirmed that the detonation of a home-made explosive device was the cause of the crash.

"Speaking about airports, it goes without saying. In addition, measures for prevention of terrorism have been, of course, taken and are being carried out," Yoshihide Suga said, answering a journalist's question regarding increased security measures in the country after the Russian plane crash in Egypt.

According to Suga, authorities are providing citizens going abroad with specific information on aircraft security.

Suga noted that no connections with extremist Islamic groups, including in social networks, have been identified in Japan.