A gunman shoots dead two police officers sitting inside a patrol car in New York before killing himself, officials say.

The US says North Korea must admit "culpability" for a cyber-attack on Sony Pictures after North Korea suggests a joint inquiry into the attack.

Australian authorities charge a woman in the northern city of Cairns with the murder of seven of her children and her niece.

Former three-time heavyweight champion boxer Muhammad Ali has been taken to hospital with a mild case of pneumonia, his spokesman says.

Tunisia, whose 2011 uprising inspired the Arab Spring, holds a presidential run-off whose winner will be the country's first freely elected leader.

Jordan executes 11 men convicted of murder, ending a eight-year moratorium on the death penalty.

President Obama says "there is no justification" for the shooting dead of two policemen in New York, amid tension over police tactics in the city.

The US is considering putting North Korea back on the list of terrorism sponsors, President Barack Obama says, after a cyber-attack on Sony Pictures.