A magnitude 5.9 natural disaster struck Lombok Island in West Nusa Tenggara on Thursday afternoon, only four days after a magnitude 7 quake devastated the island.
The strong aftershock, measured at magnitude 5.9 by the U.S. Geological Survey, caused panic and damage.
Humanitarian groups say that they are focusing their efforts on reaching these areas which have so far been impassable because of collapsed buildings, roads and other destruction related to Sunday's quake.
"People in the street began to panic and got out of their cars, they ran in different directions in the middle of the traffic".
Almost 1,500 people are in hospital with serious injuries and more than 156,000 have been displaced due to the extensive damage to thousands of homes.
He has said several times that the number of deaths will increase.
A magnitude 6.4 natural disaster on July 29 killed 16 people and cracked and weakened many structures, amplifying the damage that occurred in Monday's quake.
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Makeshift medical facilities have been set up to treat the injured.
A man inspects the ruin of his house destroyed by an quake in North Lombok, Indonesia, Thursday.
It comes just four days after a massive 6.9 magnitude quake shook the region on Sunday, killing 350 people.
Many people used the word "selamat" - meaning "to survive" - as they wrote about the magnitude 7.0 quake, which, CBS reports, killed at least 131 people.
Wiranto said the government will develop a plan to rebuild communities on Lombok, which like its more famous neighbour Bali is a popular tourist destination with powder-white beaches, mountains and a lush interior.
"I visited villages yesterday that were completely collapsed", he said, while other teams in East and North Lombok had reported villages where 75 percent of homes were damaged.
But some evacuees have complained of being ignored or experiencing long delays for supplies to arrive at shelters. Tens of thousands are now sleeping out in the open or in the ruins of their homes. More than 1,000 schools have been damaged, the organization said.