Twitter co-founders Jack Dorsey (L), Biz Stone and Evan Williams (R) speak after the Twitter Inc. IPO on the floor of the New York Stock Exchange in New York.

Shares in social-messaging website Twitter soared 73 per cent in value on their stock market debut in New York yesterday, pushing the market worth of (...)

The Boston Police department said the man was discovered  unconscious by a state trooper in the neighbourhood of Adam’s Village. Image: Google Maps

An Irish immigrant living in Boston is being treated in hospital following a suspected attack in the city at the weekend.The man was admitted to hos(...)

Running shoes hang on a fence at a makeshift memorial near the Boston Marathon finish line in Boston’s Copley Square.

US authorities tonight charged three men with interfering with the investigation of the Boston marathon bombing, accusing two students from Kaz(...)

Investigators continue to work the scene of two bomb explosions at the finish line of the marathon that killed 3 people and injured over one hundred more. Photograph: Darren McCollester/Getty Images

Investigators have found video of a man that they believe may have planted the deadly bombs at the Boston Marathon, a person briefed on the mat(...)

Moments after the first explosion near the finish line of the Boston Marathon, smoke is seen in the background where a second explosion occurred. Photograph: David L. Ryan/The Boston Globe

President Barack Obama said the full resources of the federal government are being mobilised to investigate the deadly explosions today in Boston a(...)

Two people are reported dead and 22 were injured after two explosions at the finish line of the Boston marathon about three hours after the wi(...)