Russia's FSB security services raided a top space research centre Friday as part of an investigation into staff alleged to have passed secret information on Moscow's hypersonic missile programme to the West.

The raid took place on the Central Research Institute of Mechanical Engineering (TsNIIMash), which is the Russian space agency Roscosmos's in-house think tank.

Sources told the Kommersant daily newspaper that the probe was over "high treason," with around 10 people suspected of "cooperation with Western secret services."

Vladimir Ustimenko, a Roscosmos spokesman, confirmed the search to the newspaper and said the agency was providing maximum assistance to the security services.

The search came just one day after the Defense Ministry published several videos of new weapons systems - two of which were Russia’s publicly acknowledged hypersonic missile projects.