Sunday's quake triggered at least 230 aftershocks, which were expected to continue for the next two weeks.
Detik.com reported Thursday the magnitude-6.9 quake that occurred Sunday has resulted in the deaths of 281 people, and 1,033 injured, citing government sources in West Nusa Tenggara, a province of Indonesia.
The first quake, a 6.9 magnitude event, killed almost 350 people, according to Indonesian state media.
He told the Jakarta Globe that "residents panicked and ran from their shelters" and "several buildings were further damaged".
The numbers have increased as reports came in from areas isolated by the 6.9 magnitude quake, which struck off the waters of the northern part of Lombok island.
Some villages had "completely collapsed", said a Red Cross official in Lombok, Christopher Rassi.
Some 270,000 people are homeless or otherwise displaced.
Yet social media companies must take better precautions when designing features to be used during disasters such as the Lombok quake, according to Siane Monreal, social media manager for the International Committee of the Red Cross (ICRC).
The national disaster agency stood by its latest death toll of 131 despite other government agencies including the military reporting much higher figures. The Indonesian Red Cross said Thursday that an estimated 20,000 people in remote areas of the island are still without aid. He also says they're continuing to look for people with untreated injuries.
Lying on the fault lines in the Pacific Basin, Indonesia is a hotspot for earthquakes.
The magnitude-6.2 natural disaster followed Sunday's magnitude-6.9 tremor, which came a week after a magnitude-6.4 quake killed at least 17.
Thousands of tourists visiting Lombok - as well as the nearby Gili Islands and Bali - have been evacuated or have chosen to leave since the weekend.