Azerbaijan’s flag carrier has announced the suspension of flights to several Russian airports, citing potential flight safety risks following a crash of one of its planes that many experts have blamed on Russian air defense fire.

The flight was en route from the Azerbaijani capital of Baku to Grozny, in Russia’s south, when it diverted and attempted an emergency landing in Kazakhstan.

An Azerbaijan Airlines plane that crashed on Christmas Day was “likely shot down by a Russian military air defence system,” a UK-based aviation security firm has said. The community is coming together to remember a man killed in a Waukesha County crash that happened on Tuesday, Dec. 24.