US gun violence

US Army officials detail how unarmed soldiers subdued the suspect and saved the lives of injured colleagues.

The US Department of Justice could also seek the death penalty in the case.

The US Army sergeant allegedly opened fire on his fellow troops before being tackled by soldiers, officials say.

Police say the suspect was "a regular" at the bar where he opened fire, and that a bartender and three patrons were among the victims.

The suspect, named as Michael Paul Brown, is believed to be "armed and dangerous", police say.

Officer Didarul Islam, who was expecting a third child with his wife, was one of four people killed in Monday's shooting at an office building.

The man who stormed a Midtown Manhattan skyscraper paid his boss $1,400 (£1,100) for the semi-automatic rifle, police say.

Police officer Didarul Islam and Blackstone employee Wesley LePatner are among the four people killed in Monday's New York City shooting.