The 5.9-magnitude aftershock struck on Thursday, further weakening any buildings still standing in the wake of Sunday's 7.0 quake and a 6.4 tremor on July 29.
Indonesia's geological agency said the quake Thursday afternoon had a magnitude of 6.2 and was shallow, at a depth of 12 kilometres, centred in the northwest of the island. In December 2004, a magnitude-9.1 quake off Sumatra island triggered a tsunami that killed 230,000 people in a dozen countries. On Tuesday, the government estimated up to 20,000 people were still in need of assistance in northern Lombok, with around 80% of buildings destroyed.
He said they were also looking for people with untreated injuries.
An aerial view of the collapsed Jamiul Jamaah mosque where rescue workers and soldiers search for natural disaster victims in Pemenang, North Lombok, Indonesia on August 8, 2018.
Last week, 17 people were killed when a 6.4-magnitude natural disaster hit Lombok.
Many frightened villagers are staying under tents or tarpaulins dotted along roads or in parched rice fields.
More than 120 people died in Kayangan as a result of the quake, according to the state-run Antara news agency.
Kepa Arrizabalaga and David de Gea of Spain warm up for a friendly with Switzerland in June. CREDIT Manuel Queimadelos Alonso Getty Images
Some villages had "completely collapsed", said a Red Cross official in Lombok, Christopher Rassi.
'The building was cracked before, just after the quake last Sunday, but it still operates, sometimes open, sometimes not, ' a witness told local media.
"We still need long-term aid, even though we have already received help from various (regional) governments", national disaster agency spokesman Sutopo Purwo Nugroho said.
"I visited villages yesterday that were completely collapsed", he said.
Thousands of tourists have left Lombok since Sunday, fearing further earthquakes, some on extra flights provided by airlines and others on ferries to the neighbouring island of Bali.
"Falling rubble instantly paralyzed Mary Andoni from the waist down when Indonesia was shaken by one of its deadliest earthquakes in years".
Across much of the island, a popular tourist destination, once-bustling villages have been turned into virtual ghost towns.
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