An American reporter from the Wall Street Journal, Evan Gershkovich, was arrested in Yekaterinburg.
This was reported by Interfax quoting a statement from the internal intelligence services of the FSB.
Gershkovich who is 32 years old and regularly accredited to the Foreign Ministry is accused of espionage.
In a statement, the FSB states that the journalist, "acting on instructions from the American side, collected information covered by state secrecy on the activity of one of the enterprises of the Russian military industrial complex".