Commodities trading giant Trafigura has frozen its investments in Russia and would review its shareholding in Arctic exploration and production company Vostok Oil.

The Singapore-headquartered firm said it made the decision “following news of the terrible violence being inflicted” in Ukraine.

“We are now reviewing the options in respect of our passive shareholding in Vostok Oil in which we have no active or managerial input,” the trader said in a statement on Wednesday.