Russian security services have locked down part of a Siberian city in an what appears to be an operation against a suspected Islamic State terror cell.

According to local news agencies, police cordonded off an area to the west of Tyumen city centre on Friday evening, with residents evacuated, electricity cut and street lighting turned off.

Footage posted on social media shows dozens of armoured vehicles streaming the streets surrounding the area.

According to an unnamed security service source, authorities understand that a group of terrorists are hiding in this area, and supposedly on the verge of committing a terrorist attack

Witnesses cited in local media report an exchange of gunfire and say a residential home also caught fire in the process.