The man who shot dead two New York policemen told people 'watch what I'm going to do' shortly before the killings, police say.
North Korea has threatened strikes against the White House and the United States mainland, calling the country a "cesspool of terrorism" and accusing Barack Obama of spreading "reckless" rumours about its involvement in a cyber-attack on Sony Pictures.
Such rhetoric is not unusual from Pyongyang's massive propaganda machine during times of tension with Washington.
But the long statement from the powerful National Defence Commission also underscores Pyongyang's sensitivity at a movie whose plot focuses on the assassination of its leader Kim Jong Un, the beneficiary of a decades-long cult of personality built around his family dynasty.
"Our toughest counter-action will be boldly taken against the White House, the Pentagon and the whole US mainland, the cesspool of terrorism, by far surpassing the 'symmetric counter-action' declared by Obama," said the commission's policy department, in a statement carried by the official Korean Central News Agency.
The US blames North Korea for the cyber-attack that escalated to threats of terror strikes against American cinemas and caused Sony to cancel The Interview's release.
China has said it opposes all forms of cyber attacks and "cyber terrorism" in the wake of the massive Sony Pictures security breach.
Beijing's Foreign Minister Wang Yi made the denouncement to US Secretary of State John Kerry via a phone call, Reuters have reported.
"China opposes any country or person using other nations' internal facilities to conduct cyber attacks on third-party countries." Wang Yi reportedly told Kerry.
Last week, the US concluded that North Korea, one of China's global allies, was responsible for the attack on Sony Pictures.
A new detective has taken over the investigation into the disappearance of Madeleine McCann.
Detective Chief Inspector Nicola Wall has replaced Detective Chief Inspector Andy Redwood, who is retiring.
Mr Redwood has led Operation Grange since it was launched in 2011, while Ms Wall was with the homicide and major crime command, the Metropolitan Police said.
Three-quarters of English councils are switching off or dimming some street lights at night, a survey has revealed, leading to claims that significant areas have been "plunged into darkness" since the Government took office.
Labour claimed the squeeze on budgets coupled with high electricity prices were leading councils to turn off or dim almost a quarter of all lights, compared with under 3% in May 2010.
A total of 1.36 million lights are either off or dimmed at night, compared with 148,000 in May 2010, out of a total of 5.7 million in the areas surveyed.
Labour obtained information from 141 of 150 councils responsible for street lights, with just 35 saying they were neither switching off nor dimming lights.
The figures showed 106 are either dimming or switching off lights, with 42 doing both.
A fugitive trying to evade an arrest warrant shot a policeman from Tampa, Florida, and then ran him over early Sunday, killing the officer, police in the US have said said.
The shooting did not appear to have any connection to the ambush killings of two New York police officers a day earlier, the Associated Press have also reported.
An Australian magistrate has rejected a plea by lawyers for a woman charged with murdering eight children to hold the next hearing in a mental health court.
Mersane Warria, charged under her full name of Raina Mersane Ina Thaiday, is accused of killing seven of her children and her niece, whose bodies were found inside her home in Manoora, a suburb of Cairns, on Friday.
Police were called to the home in the morning after receiving a report of a woman with serious injuries. When they got to the house, they found the bodies, along with Warria, who had stab wounds to her chest.
Warria, 37, did not attend today's brief hearing at Cairns Magistrates Court as she is in hospital.
Magistrate Alan Comans rejected a request from Warria's lawyer to hold the case's next hearing in a mental health court.
Criminal cases are sometimes referred to such courts if the defendant is believed to be mentally ill or has an intellectual disability. The court then decides what the defendant's mental state was when they committed the offence.
The case was adjourned until January 30.
Several "high value" items have been stolen from renowned auction house Christie's.
Jewellery, antiques and valuable works of art, including rare pieces by the famed house of Faberge, were taken from the auctioneer's headquarters in King Street, central London, the Mail on Sunday has reported.
The burglary, which was reportedly captured on CCTV, is said to have occurred two weeks ago but no arrests have been made.
Scotland Yard did not name Christie's but said: "We can confirm that officers from Westminster are currently investigating a burglary at business premises which is believed to have occurred between 6pm on Sunday, December 7 and 8am on Monday, December 8.
"A number of high value items were taken. Inquiries continue. No arrests have been made."
A driver said to be shouting "God is great" slammed into passers-by in several parts of Lyon, France, injuring 11 people and raising national concern.
The government said the man's motives were unclear but last night's incident came a day after an attack on officers in another town being investigated by anti-terror police and amid general concern after several threats by Islamic extremist groups calling for attacks against the country.
The Interior Ministry said a 40-year-old man had been arrested over last night's attack.
Police union official Michel Bonnet said some witnesses apparently heard the Renault Clio driver shout "Allahu Akbar" - God is great - and refer to the "children of Palestine", but the ministry would not confirm that.
Interior minister Bernard Cazeneuve will go to Lyon today.
A day earlier, French police in a Tours suburb shot and killed a man also shouting "Allahu Akbar" who had stabbed and wounded three officers in a police station.