Russian lawmakers may consider incorporation of four Ukrainian regions into Russia on Oct. 4 - RIA

FILE PHOTO: Service members of pro-Russian troops drive tanks in the course of Ukraine-Russia conflict near the settlement of Olenivka in the Donetsk region, Ukraine July 29, 2022. REUTERS/Alexander Ermochenko

MOSCOW (Reuters) - The head of the upper house of the Russian parliament said on Tuesday that it could consider the incorporation of Russia-controlled parts of four Ukrainian regions into Russia on Oct. 4, the RIA news agency reported.

(Reporting by Reuters; editing by Alex Richardson)