The main square and central station in Belgium's capital Brussels have evacuated by place after reports of a blast.
Witnesses said La Grande Place was cleared in seconds, while others took pictures of a fire in the nearby Central Station.
Belgian media have reported a man wearing a explosive belt has been "neutralised" by police.
Local police tweeted about an "incident with an individual at Brussels Central station".
It said: "The situation is under control but please follow the instructions [of police]".
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