More help is reaching earthquake survivors on Indonesia's Java island, as international aid workers take supplies to the worst-affected areas.
Officials say Saturday's quake had a magnitude of 6.3 and killed more than 5,700 people.
At least 22 countries have responded to Indonesia's call for aid.
The latest responders in the hard-hit Yogyakarta province include U.S. Marines and aid workers from China, Malaysia and Japan.
A spokeswoman for the American Red Cross says a group of 400 volunteers is in the region, including a team of experts providing mental support to traumatized survivors.
The aid groups are trying to help some 200,000 people left homeless after the quake. Many survivors say they have received little or no assistance, and some have resorted to begging on the streets for help.
Increased activity at a nearby volcano threatens to worsen the situation. Mount Merapi spewed clouds of ash and debris Tuesday, raising fears of a fresh eruption.
Meanwhile, a moderate earthquake struck another part of Indonesia today. Officials say a tremor measuring 5.6 hit the central part of Papua province, causing panic, but there were no reports of damage or injuries.
Indonesian President Susilo Bambang Yudhoyono has moved into a temporary office in Yogyakarta to supervise earthquake recovery operations.
His government has pledged more than $107 million for assistance to earthquake victims and reconstruction in the region.
The U.S. State Department said today it would provide $5 million in relief, additional aid teams and military medical personnel to help the victims.
South Korea said today it would provide $2 million in financial aid to Indonesia for earthquake relief.