British journalist Kieron Bryan, who was being held in Russia for his part in a Greenpeace protest, has been released.
Greenpeace's Arctic Sunrise Twitter feed posted a picture of the newly-released Mr Bryan with the words, "Now, there's a smile!"
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A weather warning is also in place for Scotland, which could see "treacherous" and blizzard-like conditions on Thursday.
The lorry lost several butane gas canisters as the driver rammed into cars in a dangerous escape attempt that was ended by police gunfire.
The Gambling Commission said: "Integrity in sport is not a joke and we have opened an investigation to establish exactly what happened."