At least 75 people were killed and 200 are still missing in the latest toll from the Guatemala volcano eruption on Sunday.
"We already have data with names and locations where there are missing persons and that number is 192," Sergio Cabanas, head of Guatemala's disaster management agency, told reporters.
Experts said the Fuego volcano recorded several weak explosions on Wednesday, generating a fresh 4,700 meter (15,500 feet) high column of gray ash.
"The explosions are generating moderate avalanches that have an approximate distance of 800 to 1,000 meters and on their trajectory they are carrying fine material to a height of around 100 meters," the Volcanology Institute said.
"There is persistent ash in the environment."
Fears of a fresh blowup of the 3,763-meter (12,346-foot) volcano have stalked rescue workers since Sunday's eruption buried entire villages on its southern flank.
Emergency workers had to temporarily suspend their search late Tuesday after a new eruption triggered a landslide.
An AFP photographer saw a large plume of ash rise into the sky, prompting an evacuation of everyone authorities could find before the police, the military and rescuers were ordered to stand down.
Hundreds of rescue workers, including firefighters, police and the military, were battling adverse conditions to search for remains in the tangled morass of rubble, dust and earth left behind by the landslides.
Firefighters hosed down their smoking boots, which had sunk into molten volcanic material just below the ash surface.
Everything in the search area was covered in a thick blanket of dust. In the murk created by the dust, police were using red ink to mark homes that had already been searched for bodies.
Rains was hardening the ash on the surface, making it harder to dig out bodies.
Fifty-nine-year-old truck driver Efrain Suarez is a resident of the village. He said any bodies below are surely severely damaged, and if heavy machinery comes, it will tear up their remains.
In his words: "Nobody is going to be able to get them out nor say how many are buried here."
More than 12,000 people have been evacuated from their homes, the disaster management agency said, more than 3,000 of them housed in temporary shelters.
The killer eruption was the Central American country's strongest in four decades.
It sent huge clouds of ash barreling over the surrounding area, blanketing roads, cars and people in thick gray dust as a river of molten mud carved a path down the mountain, sweeping away entire villages.
Officials said the speed and ferocity of the eruption took mountain communities by surprise, with many of the dead found in or around their homes.
Despite offers of international help from the United States, Mexico and several Latin American neighbors, Guatemalan authorities have not made a request for foreign aid.
The foreign ministry said disaster management agency CONRED would help determine any such request.
"We are ready when CONRED as the governing body of emergency management authorize us to make an appeal," the ministry said in a statement.
President Jimmy Morales has been criticized on social media for passively waiting to react to offers of international aid.
The head of the international Red Cross Francesco Rocca is due to visit the country on Thursday, the Geneva-based agency said.
