Shares in Twitter have gone on sale to the public for the first time, instantly leaping more than 70% above their offering price in a dazzling debut that exceeded even Wall Street’s lofty hopes.

Police in Boston have surrounded a building in the suburb of Watertown as they hunt a teenager they suspect was involved in the bomb attack on the city's marathon.

Connecticut State Police say a vehicle believed to be linked to Dzhokhar Tsarnaev has been recovered.

Two bombs exploded near the finish of the Boston Marathon today, killing two people, injuring 22 others and sending authorities rushing to aid wounded spectators at America’s oldest and most prestigous marathon.

US authorities scrambled to tend to dozens of maimed and wounded people after two bombs exploded at the finish of the Boston Marathon.

TRANSATLANTIC co-operation between two police forces will culminate this coming Friday with a major concert designed to raise money for families of children battling cancer.

Dennis Lehane

Security around Kate Hudson's latest movie 'Bride Wars' is on high-alert after a man allegedly expressed an "unhealthy interest" in the actress, according to reports.

A TEAM of police officers and FBI agents from America are set for a three-day battle with gardaí on the fairways, which will raise money for a Cork charity.