National News

Colombian police have raised the death toll from a car bomb that exploded in a police academy in the capital Bogota to 21.

International student Aiia Maasarwe loved Melbourne, the city in which she lost her life and where on Friday police arrested a man in connection with the 21-year-old's appalling death.

Queen Elizabeth's 97-year-old husband Prince Philip is recovering at the couple's home in eastern England after escaping without injury when his Land Rover flipped over following a crash with another vehicle.

Sufficient evidence exists to support pill testing trials, a prominent group of doctors has told state and territory leaders.

The royal commission into Australia's aged care sector comes amid a "rising torrent" of concern over safety and quality but is a "once-in-a-lifetime" opportunity to forge a better path, the inquiry has been told.

The US State Department has expressed concern after reports that Chechen authorities have resumed large-scale arrests of LGBT individuals emerged earlier in the week.

Prime Minister Scott Morrison has described the brutal murder of an international student in Melbourne as the "most despicable of crimes", while Labor leader Bill Shorten says it was "shocking and senseless".

A Canadian geologist kidnapped in a restive region of Burkina Faso has been found dead.

US President Donald Trump has issued stark warnings to allies and adversaries while unveiling a new missile defence plan, partly built in space, aimed at destroying "any missile launched against the United States anywhere, anytime, any place".

Prime Minister Scott Morrison says a report that identified shortcomings with how a $444 million grant was handed to the Great Barrier Reef Foundation has proven ministers did not act improperly.