The lawsuits were filed on Tuesday in the Moscow city arbitration court, according to the documents seen by Reuters. The documents did not include any details on the reason for the lawsuits.

The defendants in the suit were identified in the documents as Siemens Gas Turbine Technologies LLC, a St Petersburg-based joint venture in which Siemens has a majority stake, and Russian state firm Technopromexport.

(Reporting by Oksana Kobzeva, Gleb Stolyarov and Anastasia Lyrchikova; Writing by Christian Lowe; Editing by Dmitry Solovyov)