Russia’s Federal Security Service (FSB) has raided a space research facility after a suspected leak of hypersonic missile secrets to Western spies.

The state space agency Roskosmos said its security staff were co-operating with FSB officers on a criminal case.

Russia’s Kommersant daily says about 10 staff at a Roskosmos facility called TsNIIMash are under suspicion. A director’s office was searched.

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