Australian Prime Minister Scott Morrison has apologised for going on holiday while the country struggled with a mounting wildfire crisis. Mr Morrison cut short his trip to Hawaii as criticism of him increased. One person was found dead on Saturday, and wildfires are raging in three states. Since September, Australia's bushfire emergency has killed at least nine people, destroyed more than 700 homes and scorched millions of hectares. Earlier, deputy prime minister Michael McCormack conceded that more had to be done to tackle global warming, after many Australians linked the severity of this year's fires to climate change.

What did PM Morrison say?

"I get it that people would have been upset to know that I was holidaying with my family while their families were under great stress," he said. Speaking after a briefing with fire officials, he said he knew Australians were anxious about the fires but insisted that the emergency response was "the best in the world". He conceded that climate change was contributing to changing weather patterns, but denied that it had directly caused Australia's wildfires. "It's not a credible suggestion to make that link," he argued. 'Catastrophic' conditions fuel Australia wildfires Many Australians have accused Scott Morrison's government of inaction on global warming, with criticism growing as a heatwave broke records across the country and worsened the fires. Although climate change is not the direct cause of bushfires, scientists have long warned that a hotter, drier climate would contribute to Australia's fires becoming more frequent and intense. Firefighters' union leader Leighton Drury previously said Australia was "seeing an absolute lack of leadership from this government, and it is a disgrace".

Tributes paid to volunteers

Mr Morrison also paid tribute to Geoffrey Keaton, 32, and Andrew O'Dwyer, 36, the two firefighters killed in New South Wales on Thursday. "When our volunteers go out there, they do it for so many reasons - but I can't help thinking they do it for love of family. Family is community, and they were out there defending their communities on that fateful night," he said. The two men died when their truck was hit by a falling tree near a fire front, causing it to roll off the road. Firefighters Andrew O'Dwyer (left) and Geoffrey Keaton were both fathers to young children Three other firefighters who were also in the vehicle survived with minor injuries.

What's happening with the fires?

Rising temperatures and strong winds worsened fires in three states. In South Australia one person was found dead, another was critically injured and 15 homes were destroyed about 40km (25 miles) east of the state capital of Adelaide. The Gospers Mountain Fire has destroyed 460,000 hectares (1.14 million acres) NSW fire chief Shane Fitzsimmons described Saturday as an "awful day". One man was reported missing in the Blue Mountains west of Sydney, but ultimately found safe and well, the New South Wales Rural Fire Service tweeted. By Saturday evening six fires in the state were deemed to be at emergency level - the second-highest level of danger after catastrophic - including two near Sydney. In Canberra a cricket match was called off because of poor air quality resulting from smoke from the fires. Haze from bushfires forced the game between Sydney Thunder and Adelaide Strikers in Canberra to be abandoned In Victoria, authorities said 142 fires had started in the state since Friday. One of these was burning at an emergency level by Saturday afternoon.

What is driving the fires?

A combination of temperatures above 40C, low humidity and strong winds have worsened the struggle for the 3,000 emergency personnel mobilised to deal with the bushfires in NSW. Australia fire evacuees in Mittagong used a car park a shelter "We are in a period of unbelievable drought and some areas haven't seen rain for more than 12 months", NSW Rural Fire Services Inspector Ben Shepherd told the BBC. "These fires are likely to continue to spread well past Christmas", he added. Some of the fires in NSW were generating their own thunderstorms, the Rural Fire Service said. Conditions were expected to improve over the next few days ahead of another period of hot weather expected next week. "We will not get on top of these fires until we get some decent rain - we have said that for weeks and months," Mr Fitzsimmons said. One person was found dead near Adelaide in South Australia However, weather officials say no major rainfall is expected in the next two months. The Gospers Mountain mega fire has destroyed about 460,000 hectares (1.14 million acres) north-west of Sydney and fire officials said there was a risk it could merge with the Grose Valley fire in the Blue Mountains.