A commuter train crash at a station in the Argentine capital, Buenos Aires, kills 49 people and leaves at least 600 injured, officials say.

Former IMF head Dominique Strauss-Kahn is released after two days of questioning over an alleged prostitution ring but will be quizzed again next month.

Tributes pour in for Sunday Times foreign correspondent Marie Colvin, who has been killed in Syria.

Lewis Hamilton pronounces himself impressed with the speed of his "well-behaved" new McLaren after day two of the second pre-season test in Spain.

Northern Ireland's Graeme McDowell is knocked out in the first round of the World Match Play Championship by South Korea's YE Yang.