A Qatar Airways plane, which was escorted to Manchester Airport by an RAF jet, is surrounded by emergency services vehicles.
A passenger at the airport tweeted:
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Heavy thundery rain for parts of Northern Ireland and Scotland
Four men are being interrogated in Spain's National Court over the vehicle attacks that killed 15 people and wounded more than 120 others.
In the position paper the Government sets out plans to ensure that cross-border legal disputes are dealt with in a "fair way" post-Brexit.