ILIGAN, Philippines (AP) -- With funeral parlors overwhelmed, authorities in a flood-stricken southern Philippine city on Monday organized the first mass burial of people who were swept to their deaths in one of worst calamities to strike the region in decades.
The official death toll from Friday night's disaster, spawned by a tropical storm, rose to 927. Benito Ramos, head of the Office of Civil Defense, said additional bodies were retrieved from the ocean.
The number of missing varied widely. Official figures put the number at 82, while the Philippine Red Cross estimated 800.
The disparity underscores the difficulty in accounting for people who could be buried in the mud and debris littering much of the area or could be alive but lost in crowded evacuation centers or elsewhere.
"We lost count of how many are missing," said Ramos.
In Iligan, a coastal industrial hub of 330,000 people, Mayor Lawrence Cruz said the city's half dozen funeral parlors were full to capacity and no longer accepting bodies. The first 50 or so unclaimed bodies were buried in individual tombs at the city cemetery, he said.
"For public health purposes, we're doing this. The bodies are decomposing and there is no place where we can place them, not in an enclosed building, not in a gymnasium," Cruz told The Associated Press.
He said many of the Iligan dead - 279 by official count - "are just piled and laid outside the morgues," which ran out of formaldehyde for embalming and coffins.
"We're using plastic bags, whatever is available," Cruz said.
In nearby Cagayan de Oro city, the situation was more chaotic and people were resisting mass burials, instead demanding that bodies be interned until relatives can claim them.
About 580 died in Cagayan de Oro, most of them women and children, many of whom lived along river banks. Flood waters came gushing after 12 hours of pounding rain, catching most of them in their sleep.
Residents told local officials that plans for a mass burial was "un-Christian," said Cagayan de Oro city administrator Griscelda Joson.
More bodies continued to be found. While city officials were meeting Sunday, more than 40 bodies were seen floating off an island but the coast guard could not recover them, Joson said.
In a grim sign of desperation, a funeral parlor dumped about 30 badly decomposed bodies in a city garbage dump over the weekend, sparking protests from distraught villagers who were looking for the missing loved ones.
Ramos, the head of the agency that is spearheading the recovery and relief operations, attributed the high casualties "partly to the complacency of people because they are not in the usual path of storms" despite warnings by officials that one was approaching.
About 143,000 people were affected in 13 southern and central provinces, including 45,000 who fled to evacuation centers. About 7,000 houses were swept away, destroyed or damaged, the Office of Civil Defense said.
An estimated 35 percent of evacuees are children, said Trevor Clark, head of UNICEF in the southern Mindanao region. Running water and hygiene were major concerns, followed by a lack of clothing, blankets and even shoes for young children, he said.
Although he said government agencies were responding in a quick and efficient manner, they were overwhelmed and the United Nations was preparing an appeal for urgent assistance.
President Barack Obama expressed deep condolences on Monday for the "tremendous loss of life and devastation caused by recent flooding in the Philippines."
"In the spirit of our long history of friendship and cooperation with the Philippines, the United States stands ready to assist the Philippine people and government should humanitarian assistance and recovery efforts be needed," a White House statement said.
Associated Press writers Jim Gomez and Hrvoje Hranjski in Manila contributed to this report.