Indonesia's government said on Monday the number of victims from the 6.3-magnitude earthquake on Java over the weekend had breached 5,000, after officials revised figures from one of the hardest-hit districts. Some 200,000 people have been made homeless and tens of thousands are injured. Around 35,000 homes and buildings in and around the city of Yogyakarta have been reduced to rubble.

After initial difficulties reaching the affected region -- an area hundreds of square miles south of Yogykarta -- aid began to trickle in on Monday. According to the Associated Press, a UN plane carrying tents and other emergency gear landed in the city Solo, which is three hours by road from the most devastated district Bantul.

"The access to remote areas is very difficult, these roads are quite narrow. It's creating some sort of bottleneck to deliver supplies," Paul Dillon, spokesman for the UN-affiliated International Organization of Migration, told AP.

Indonesian President Susilo Bambang Yudhoyono acknowledged a "lack of coordination" in aid distribution when he visited refugees Monday and called for government officials to be "more agile" in the efforts. "I saw in many areas that there are many things that need to be speeded up," he said.

Yogyakarta's provincial secretary, Bambang Susanto Priyohadi, agreed the pace of aid needed to be sped up. "The aid has come since last night from the UN But when I checked this morning, the amount is very minimal," he told Reuters, explaining that removing the dead was another priority. "It has been two days and those bodies probably have decomposed and if we do not move them away from the pockets of population, they could turn into sources of disease."

Although the aid has come more slowly than many wished, the international community has pledged tens of millions of dollars in relief supplies and medical and disaster experts. The Indonesian government said late Sunday it would allocate $107 million (€84 million) to help rebuild the region over the next year.

The Indonesian archipelago is located along the "Ring of Fire" region of heavy seismic and volcanic activity.

According to the Associated Press, a vulcanologist said the quake heightened activity at nearby Mount Merapi, a volcano that has been rumbling for weeks and sporadically oozing hot lava and highly toxic gases. The most deadly earthquake in Indonesia's history spawned the deadly South Asia tsunami on Dec. 26, 2004. Some 170,000 people from Sumatra's Aceh region died.