Julie Bishop says Australia’s travel advice for Russia remains under close review after two bomb blasts in the Russian city of Volgograd which have killed more than 30 people.

The violence raises fears of a concerted campaign before the Olympics, which start on February 7 around Sochi, a resort on the Black Sea at the western end of the Caucasus range, 700 kilometres southwest of Volgograd.

But Minister Bishop expressed confidence in Russian authorities ahead of the Sochi Games.

“The Russians are assuring the international community they have the highest safety concerns for these games,” Bishop said.

“I’m sure they will do all they can to ensure the safety and the welfare of the athletes and participants.

“We will closely monitor the situation, we will work closely with the Russian authorities and continue to do so and certainly consult our officials on the ground.

“But we won’t lightly prevent our athletes from participating in an event for which they have trained for years.”