An Olympic medal stolen this week at a nightclub in London has been returned but a medal stolen in the same incident is still missing, police said. The bronze medal belonging to Hannah MacLeod, a member of the British field hockey team, was anonymously mailed to the offices of England Hockey and arrived Friday, London police said. MacLeod\'s medal disappeared at a nightclub along with a bronze belonging to rower Alex Partridge. The pair had their medals in the pockets of their team jackets, which they left on their chairs while they were on the dance floor. CNN said MacLeod and Partridge were at the trendy club Mahiki for an after party following a reception for Britain\'s Olympic team at Buckingham Palace. Police said they would keep searching for Partridge\'s medal but indicated they had few leads