He also said they're continuing to look for people with untreated injuries.
The US Geological survey reported a 5.2-magnitude natural disaster just off the coast of Lombok between the tourist town of Senggigi and the Gili Islands on Monday at 11.50pm.
It's the third tremor to hit Lombok in the space of two weeks.
"The quake was felt strongly".
The deadly 6.9-magnitude quake hit the Indonesian island on Sunday night, leaving tens of thousands of people homeless.
"People are always saying they need water and tarps", Spokesman Arifin Hadi told the AP about the current rescue efforts.
He estimated 75 percent of houses are damaged in some villages in east and north Lombok.
The earlier earthquakes also left cracks in walls and roofs, making the weakened buildings susceptible to collapse.
Aid began reaching isolated areas of the Indonesian island struggling after a powerful quake, while rescuers doubled down on efforts to find the dead, pulling another body from the rubble.
Authorities said all the tourists who wanted to be evacuated from three outlying vacation islands due to power blackouts and damage to hotels had left by boat, some 5,000 people in all.
There is a dire need for medical staff and "long-term aid", especially food and medicine in the worst-hit areas, government officials said.
"There are still some evacuees that have not yet been touched by aid, especially in North Lombok and West Lombok", Nugroho tweeted Thursday.
But some evacuees have complained of being ignored or experiencing long delays for supplies to arrive at shelters.
"I'm still in pain from giving birth", she told AFP.
Aid groups say children are particularly vulnerable, with many sleeping in open fields and suffering illnesses from lack of warm clothing and blankets.
Hundreds of bloodied and bandaged victims have been treated outside damaged hospitals in the island's main city of Mataram and other badly affected areas.