"They have been sent for an expertise," one of the sources said.
TASS has no official confirmation of this information at the moment.
Kogalymavia Flight 9268 came down about half-an-hour after leaving the resort of Sharm el-Sheikh for the Russian city of St. Petersburg. The disaster site is 100 kilometers south of the administrative center of North Sinai Governorate, the city of Al-Arish. All 224 aboard the plane perished.