A second hiker who fell while climbing up Mt Beerwah in the Sunshine CoastGlasshouse Mountains has died.

The 18-year-old was with his girlfriend and her sister on the mountain on Sunday when he and his partner suddenly fell off the rockface.

His girlfriend, 18, fell 60 metres and died at the scene, while he fell 90m and was taken to Sunshine Coast University Hospital in a critical condition after suffering severe head injuries.

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The man has now died from his injuries.

The other teenager was uninjured, but had to be met by search and rescue teams on the mountain, and she was suffering from shock.

The mountain was closed at the time due to heavy rain recorded in the region, and it was supposed to be opened the next day.

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Its closure was extended until yesterday after the tragedy.

Senior Sergeant Kylie McLellan said the incident was an awful thing to happen.

"It's an extraordinarily sad and tragic accident today," he said.

"The falls occurred as a result of some late rain that made the terrain extremely slippery."

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Australian major supermarkets insist there are "no changes" to grocery delivery prices in the face of the surging cost of fuel.

A Coles spokesperson told 9news.com.au that the supermarket chain was "keeping a really close eye on it at the moment", but there were currently "no changes" to the price of delivery orders.

Nine.com.au understands that Woolworths also doesn't have plans to alter prices at the moment.

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However, the supermarket giants haven't ruled out price shifts down the track, declining to comment on future pricing.

It comes as grim new modelling from the major banks forecasts oil prices will hit $US110 a barrel in the coming weeks, before averaging out at $US90 between April and June.

That would likely see diesel and petrol prices average about $2.02/litre and $2.50/litre respectively, according to Westpac's head of business and industry economics, Sian Fenner.

The spiralling fuel prices have already prompted some fuel-reliant businesses to act.

Airlines including Qantas have hiked the price of airfares due to the cost of jet fuel, while today rideshare company DiDi Australia announced it would be increasing its fuel surcharge to compensate.

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An Australian man from Melbourne could face prison in the United States after allegedly assaulting a federal officer at Los Angeles International Airport (LAX).

Thomas Jesse Bingham, 35, was travelling on a domestic flight from Los Angeles to Las Vegas when he allegedly approached a uniformed Transport Security Administration (TSA) officer who was exiting the bathroom.

It is alleged he approached the officer and accused them of stealing his backpack and passport, before he grabbed the agent by the shirt and pulled their lanyard off.

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Bingham then allegedly grabbed and pulled the agent's hair, and pushed him into a glass wall.

The agent was later medically evaluated for pain in his hand and back.

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https://twitter.com/USAO_LosAngeles/status/2034036051841626428?ref_src=twsrc%5Etfw

Bingham was arrested by airport police, before being released from custody.

However, he was again arrested at LAX before boarding a flight to the United Kingdom.

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He has been charged with assaulting a federal officer, and is set to appear in the United States District Court in Los Angeles today.

If he is found guilty of the charges, he could face eight years imprisonment in the US.

The matter is still being investigated by authorities, including Los Angeles Police.

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