Justice Minister Andrew Little was in Indonesia when a magnitude 7.0 quake hit Lombak overnight, killing more than 80 people.
More than 50 people were injured.
"People were screaming and shouting that a tsunami was coming", he said.
"We know areas where there's a high risk that an quake will occur but exactly when is hard to say", Professor Elders said.
Mr Little told Morning Report the quake had left some of the conference delegates shaken.
It was also felt in Sumbawa Island, to the east of Lombok according to Sutopo Purwo Nugroho, a spokesman for Indonesia's National Disaster Management Board; twelve aftershocks followed the quake. Thousands were evacuated to outside shelters. There's no water, no food, the shops have been ransacked.
"You're safe, mister", said one of the soldiers as emotion overcame the man, clad in Islamic robes, and villager s crowded around him.
The agency expects the number of victims to rise as search and rescue operations continue.
Mr Dutton, who is heading to Bali for another summit, said it was a "terrible day" for Indonesia. At that magnitude it released more than five times the energy of the quake a week earlier, the USGS website showed.
Nugroho said more than 20,000 people had been displaced.
TRT World's Arabella Munro reports.
Patients at the city hospital, and also at Denpasar hospital in Bali, were evacuated and tended to by doctors in the streets.
The quake was felt for several seconds in Bali, where people ran out of buildings. On Lombok, soldiers and other rescuers carried injured people on stretchers and carpets to an evacuation centre. They said most of those who died were struck by falling debris from collapsed buildings. Immediately after the first shock, the authorities issued a warning about the possibility of a tsunami, which was later canceled.
Dwikorita Karnawati, head of Indonesia's Meteorology, Climatology and Geophysics Agency, told MetroTV that the tsunami warning has ended.
The travel agency is working with customers now in or set to travel to Lombok to help them adjust and rebook their travel arrangements, she said.
Sutopo said there were no fatalities among the local and foreign holidaymakers.
K.Shanmugam, the Home Minister of Singapore, who was in Lombok for a conference at the time of the quake, described on his Facebook post how his hotel room on the 10 floor shook violently.
An American visitor in Bali said: I'm truly humbled with this Lombok natural disaster.
"We were knocked certainly to the floor", he told Sydney radio 2GB on Monday.
TV showed crying women consoling each other outside Lombok's airport.
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