KUALA LUMPUR (AFP) - Malaysian authorities raced on Friday to try to reach 137 people, some of them injured, who were stranded atop the popular climbing peak of Mount Kinabalu after a strong earthquake triggered dangerous rockfalls.

The 6.0-magnitude quake struck near the mountain around 7:15 am Friday (2315 GMT Thursday), jolting a wide area of the Malaysian state of Sabah on Borneo island.

No deaths or major damage had been reported as of late Friday afternoon.

But Sabah state tourism minister Masidi Manjun told AFP the quake had triggered landslides and sent huge boulders tumbling down the 4,095m mountain's wide granite crown.

Masidi said 137 people were "slowly and cautiously" working their way down the mountain, as an 85-member rescue team was climbing up to reach them.

The climbers, believed to include foreigners, had been stuck on the picturesque summit, slowed by lingering danger from rockfalls and damage to a key trail.

"Its very tricky now. We can't land a helicopter up there because visibility is so bad, but the people can't come down on their own because the main route is now impassable," Masidi said.

State officials were quoted earlier by the New Straits Times saying at least four climbers had suffered injuries including broken bones and head wounds due to falling rocks.

The force of the tremor was so strong that it snapped off one of the two large "Donkey's Ear" rock outcroppings that form a distinctive part of the peak's craggy profile, Masidi said.

He said authorities were now focused on trying to get supplies including food, water and warm clothing to the stranded climbers in anticipation of a possibly wet and chilly night.

Kinabalu's broad but steeply undulating moonscape-like summit is frequently lashed with heavy rain, and night temperatures can dip below freezing despite the tropical latitude.

The US Geological Survey said the quake struck at around 7.15am (2315 GMT) at a depth of 10km, with its epicentre located about 54km east of Kota Kinabalu, capital of Sabah.

No tsunami warning was issued and there were no initial reports of major damage.

Mr Colin Forsythe, a resident of Kota Kinabalu, said the quake lasted around 15 seconds and felt "as if a truck had crashed into a brick wall".

Residents throughout the quake-affected region reportedly fled in panic from homes and buildings, including Kota Kinabalu's International Airport.

Social media users uploaded photos showing damaged roads, shattered storefront windows, cracked walls and floors and rooms strewn with debris flung from shelves.

There were no report of any deaths from the quake.

Major earthquakes are rare in Malaysia, which lies just outside the Ring of Fire, the belt of seismic activity running around the Pacific basin.

Thousands of people complete the relatively easy climb of Mount Kinabalu each year.

Malaysia is on a school break and the peak was busy with visitors at the time of the tremor.

Unless those stranded at the top can be brought down, they face a chilly night on a moonscape-like summit frequently lashed with heavy rain and where night temperatures can dip well below freezing.

Most climbers attack the peak early in the morning after overnighting at a resthouse perched at 3,270m above sea level.

The vast majority spend only a few hours on the peak before heading back down and thus typically do not take food or camping equipment.

Sabah's state parks director Jamili Nais was quoted by the New Straits Times saying that the injured would be brought down using helicopters.

But other officials later said at least one helicopter had to turn back due to bad weather, and that a team of local guides may try to carry supplies up on foot instead.

Mount Kinabalu is sacred to the local Kadazan Dusun tribal group, who consider it a resting place for departed spirits.

A group of 10 apparently Western men and women angered locals last weekend when they snapped nude photos at the summit and uploaded them on the Internet.

Some Malaysian social media users posited that the quake was a sign the spirits had been angered by the act.

The authorities have not yet publicly identified the Caucasian-looking tourists or their suspected nationalities. Media reports said they had already left the country.