At least four people have died in freezing waters after an oil rig platform overturned and capsized in Russia's far eastern Okhotsk sea, the regional emergency ministry said.

Sixty-seven people were on the Kolskaya oil rig platform when the accident occurred on Sunday as the platform was being towed from the eastern Kamchatka peninsula towards the island of Sakhalin.

Al Jazeera's Neave Barker reports from Moscow.