World News Roundup: Caravan migrants take shelter in southern Mexico; Trump says US to exit nuclear treaty

Following is a summary of current world news briefs.

Australia stares at hung parliament as by-election count goes to the wire

As the count from a crucial Australian by-election dragged into Sunday, Prime Minister Scott Morrison faced the possibility that his Liberal party may have been too quick to concede a contest that would reduce his administration to a minority government. Morrison became Australia's sixth prime minister in 10 years in August after his predecessor Malcolm Turnbull fell victim to infighting among the Liberals, and the suspense over the count in Sydney's affluent Wentworth constituency was in keeping with the unpredictable politics of recent times.

Saudi explanation of Khashoggi killing 'not enough', Mnuchin says

Saudi Arabia's explanation of the killing of journalist Jamal Khashoggi was a "good first step but not enough", the U.S. Treasury secretary said on Sunday, adding it was premature to discuss sanctions against Riyadh over the incident. The comments from Steven Mnuchin are the latest from the administration of U.S. President Donald Trump that appears aimed at censuring a killing that has sparked global outrage while protecting relations with the world's top oil exporter.

Angry mob pelts stones at police at the site of Indian rail accident

An angry mob threw stones at police on Sunday near the site of a deadly railway accident in north India, demanding immediate financial compensation for the families of the victims and government jobs for those who lost wage-earners. A group of about 100 people staged the protest in the northern city of Amritsar where a train ploughed through a crowd gathered to watch the burning of effigies and a fireworks display on Friday as part of a Hindu festival, killing 59.

Afghans shut out by polling station chaos return to vote

Afghans unable to vote in Saturday's parliamentary election after hundreds of polling stations failed to open was given another chance to cast their ballot on Sunday after voting times were extended despite security threats and warnings of fraud. Around three million Afghans voted on Saturday, officials said but across the country, there were complaints that polling stations remained closed, often because staff failed to turn up.

Greece suspends police officer for swearing at a migrant woman

The Greek police have suspended an officer and ordered an internal inquiry after a video showed him verbally abusing an elderly woman at a migrant camp, police said on Saturday, amid growing violence toward migrants in Greece. The woman was standing in a long line waiting for food handout at Greece's biggest migrant camp in Moria on the Aegean island of Lesbos when the police officer insulted her using offensive language.

Thousands of caravan migrants take shelter in southern Mexico

Thousands of Central American migrants travelling together to enter the United States have hunkered down in shelters in a southern Mexico city along its border with Guatemala, according to local officials. The migrants pose a tough challenge to the Mexican government's pledge to stop the illegal travellers' plans to press ahead to the U.S. border.

Trump says U.S. to exit nuclear treaty, Russia warns of retaliation

President Donald Trump said Washington will exit the Cold-War era treaty that eliminated a class of nuclear weapons due to Russian violations, triggering a warning of retaliatory measures from Moscow. The Intermediate-Range Nuclear Forces Treaty, negotiated by then-President Ronald Reagan and Soviet leader Mikhail Gorbachev in 1987, required the elimination of short-range and intermediate-range nuclear and conventional missiles by both countries.

Indian PM Modi hails forgotten heroes in a dig at the opposition party

India's Prime Minister Narendra Modi said on Sunday that many of the country's heroes from World War Two had been deliberately ignored, with his comments interpreted by many as an attack on the opposition Congress Party. In a speech in front of Delhi's historic Red Fort, Modi said that Subhas Chandra Bose, one of the key figures in India's battle for independence from Britain, had been marginalized in modern India.

UK's Raab says open to extending Brexit transition as PM May's critics step up attacks

Britain could accept extending the post-Brexit transition period by a few months if the European Union drops its proposals for a so-called Northern Irish backstop, Britain's Brexit minister Dominic Raab said on Sunday. Talks between Britain and the EU have stalled largely over a disagreement on the backstop - an insurance policy to ensure there will be no return to a hard border on the island of Ireland if a future trading relationship is not agreed in time.

North Korea's box of bones: A mythical king and the dream of Korean unification

It's the stuff of an Indiana Jones movie: supernatural kings, ancient tombs, and government-backed archaeologists striving to harness the power of legend for a greater cause. On a divided Korean peninsula, tales of King Dangun - the mythical founder of the first Korean kingdom more than 4,350 years ago - play a quiet but persistent role in keeping the dream of reunification alive.

(With inputs from agencies.)