A 19-year old man has been arrested at Heathrow airport on suspicion of "preparing for acts of terrorism" in relation to Syria, police said.
The man is being held at a police station in London and an address in the north of the city is being searched, the Metropolitan police said in a statement.
More top news
Largely dry and fairly cloudy this afternoon with a few scattered showers and some sunny spells.
European Commission President said an EU-Canada free trade deal would help end Canadian visa restrictions for Romanians and Bulgarians.
Royal Navy vessels are following Russian warships 'every inch of the way' as they pass through the English Channel on their way to Syria.