World News Update, what you need to know

International search planes and ships scouring Indonesian waters for a missing AirAsia plane are focusing on a patch of oil as a top official warns the aircraft is probably at the bottom of the sea.

ELSEWHERE:

ATHENS - The death toll from a stricken ferry in the Adriatic Sea has risen to eight as Italian authorities said all passengers had been evacuated from the vessel, marking the end of a rescue operation hampered by bad weather.

LONDON - Some passengers suffered slight injuries after a Virgin Atlantic plane carrying 462 people was forced to make an emergency landing in London due to a problem with its landing gear.

LONDON - A healthcare worker who returned from Sierra Leone has been diagnosed with Ebola and is receiving treatment in Glasgow, the Scottish government says.

LONDON - Rallies have been held in London and The Hague in support of three Al Jazeera journalists, including Australian Peter Greste, as they marked a year in prison in Egypt.

LAHORE - A fire has erupted in a busy market in the eastern Pakistani city of Lahore, killing at least 11 people and injuring four others, officials say.

MOSCOW - Ukrainian President Petro Poroshenko has signed a law ending the country's non-aligned status.