The fresh seismic event followed the 6.9 magnitude quake on Sunday that flattened homes and stranded thousands of people on Lombok's northern coast and the nearby Gili Islands.
"The quake was felt strongly".
The national disaster agency has stood by the official death toll of 131, despite other government agencies, including the military, reporting much higher figures.
"We were stuck in traffic while delivering aid, suddenly it felt like our auto was hit from behind, it was so strong", witness Sri Laksmi told AFP.
People are seen running out of Bali's Ngurah Rai International Airport, Indonesia August 9, 2018 in this still image taken from a video obtained from social media.
The magnitude 7.0 quake on Sunday killed at least 319 people and damaged or destroyed almost 68,000 homes.
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Red Cross teams on the ground, who have been giving immediate emergency help since moments after the natural disaster, tell us that in some villages in East and North Lombok, 75 per cent of houses are damaged. I visited villages yesterday that were completely collapsed.
Witnesses saw in the provincial capital Mataram people injured by the tremor and a hospital moved patients outside.
Rescuers have located victims beneath flattened buildings, with one woman pulled alive from the rubble of a collapsed mosque, which fell as people were praying.
In the statement, Nugroho said that after several days of delays, mobile kitchens have started distributing food and water to thousands of evacuees in the worst-hit areas.
Abdul Hakim, a 48-year-old welder in Tanjung, a hard-hit village, said his home was damaged by Sunday's quake and he had been sleeping outdoors with his family in a makeshift tent since then.
The disaster agency spokesperson said over 1,400 people were hospitalized, while 270,168 were displaced.
But some evacuees have complained of being ignored or experiencing long delays for supplies to arrive at shelters.
"People are always saying they need water and tarps", said Indonesian Red Cross spokesman Arifin Hadi.
"We lack the infrastructure to perform operations because (they) need to be performed in a sterile place", Wibowo told AFP.