Nyoman Sidekarya, chief of the provincial search and rescue agency that covers Lombok, told The Associated Press that the death toll from Sunday's magnitude 7.0 quake is now 227. "This number will continue increasing as rescue teams continue to find victims under collapsed buildings", the agency said in a statement on Thursday.
Officials said about three-quarters of Lombok's rural north had been without electricity since Sunday, although power had since been restored in most areas.
"I visited villages yesterday that were completely collapsed". The quake was also felt on the neighboring Gili Islands as well as Bali, Sumbawa and parts of East Java.
The latest quake, which is understood to have struck 20 minutes before the building fell to the ground, claimed at least six fresh casualties and sent the death toll to more than 320. The agency says it is has not verified these other figures but expects the toll to climb.
Mr Sutopo classified it as an aftershock.
Emergency personnel raced to evacuate tourists from the three small islands, famous for their white sandy beaches and clear waters, which are near the epicenter of the quake on Lombok. "Telecommunications access will facilitate people and their families to communicate and update each other on their conditions", said Larry Ridwan, CEO of Net1 Indonesia.
Tens of thousands of people have been left homeless following Sunday's shake.
With hospitals and clinics also affected, numerous injured have had to be treated in the open air or in makeshift clinics.
While the quake was centred on the island of Lombok, people in nearby Bali were also strongly affected.
A foreign tourist stands near damaged buldings as he tries to flag down a auto following a strong natural disaster in Pemenang, North Lombok, Indonesia on August 6, 2018. There are growing concerns that the important tourism industry will be badly hit at what should be a busy time.
In total, an estimated 20,000 people have been displaced by the massive natural disaster.
Indonesia is prone to earthquakes due to its location on the Pacific "Ring of Fire, " an arc of volcanoes and fault lines in the Pacific Ocean Basin.