Kan Hyeong-woo has the latest.
The aftershock came just four days after a devastating 6.9-magnitude quake struck Lombok, which relief agencies said had wiped out entire villages in the worst-hit regions in the north and west.
Indonesia's geological agency said the quake was shallow, at a depth of 12km, centred in the northeast of the island. Meanwhile, officials said the epicentre of the third quake was on land and so there was no risk of a tsunami.
Rescue efforts have intensified to find people buried in rubble following the natural disaster that shook Indonesia's Lombok island.
Sunday's quake also sent some 2,500 people to hospital with serious injuries and drove more than 156,000 people from their homes. The agency says it is has not verified these other figures but expects the toll to climb. "There have been 355 aftershocks since Sunday", national disaster agency spokesman Sutopo Purwo Nugroho said.
Kan Hyeong-woo, Arirang News.
More than 1,000 schools have been damaged, the organization said.
He estimated 75 per cent of houses are damaged in some villages in east and north Lombok.
Along the coastline in North Lombok, Mr Masahiro Ishizeki and Mr Zhofry Hamid were on the way to support relief distribution operations with their local partners when they saw people running around.
"We have no clean water, so if we want to go to the toilet we use a small river nearby", he said, adding they needed food, bedding and medicine. There were too many other injured and dead.
They tended to an elderly woman with an injured face and hips who'd been knocked over by her grandson as they scrambled from their house.
"I visited villages yesterday that were completely collapsed", he said.
Rinjani was evacuated immediately following another quake on July 29.
The quake killed more than 100 people in Lombok and injured hundreds of others, leaving thousands of locals homeless and tourists stranded.
Indonesia is prone to earthquakes because it lies on the Ring of Fire - the line of frequent quakes and volcanic eruptions that circles virtually the entire Pacific rim.