British police temporarily detain pair at airport

(CNN) — British counterterrorism police were searching three addresses in West Yorkshire late Monday, according to Scotland Yard.

Two search warrants were carried out in the city of Bradford, Metropolitan Police said, and the third was in the city of Leeds.

The searches were connected to the detention early Monday of 27-year-old man and a 25-year-old woman at London’s Heathrow airport, police said. The pair, who were at the airport to catch a flight to Pakistan, were later released.