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t least two people were killed in a landslide near Lake Toba in North Sumatra on Sunday night, while floods engulfed areas in West Kalimantan and hundreds of shop houses were inundated when the Kapuas River overflowed.

The bodies of Rosnauli Sidebang and her son Ridwan Simandalahi were found about 200 meters from their house near Silalahi mountain in Dairi, North Sumatra, on Monday, Dairi regency administration spokeswoman Erika Hasugian said on Monday.

The disaster also destroyed three houses and killed dozens of livestock, she said.

Silahisabungan district head, Parasian Sihaloho, said it had rained hard over the past few days, but Silalahi mountain could not absorb the rainwater since its trees were cleared in illegal logging.

The landslide, lasting five hours, damaged infrastructure including roads and bridges, cutting off land transportation between several villages in the district.

Markus, a resident of Silalahi village, said the flood and landslide happened very fast, destroying houses in the village.

"The situation was terrifying. Residents screamed when they saw stones falling from the hills," Markus said.

Several frightened residents had run to higher ground seeking safety.

As of Monday, many residents remained in refugee centers and refused to return home, fearing further landslides.

"We are still afraid of further landslides. The rain is still heavy here," Markus said, adding that the landslides had also cut off electricity to the area.

He hoped the government could find areas to relocate the residents.

Meanwhile, heavy rains over the past few days had caused big rivers - including the Kapuas in West Kalimantan, Mahakam in East Kalimantan and Barito in South Kalimantan - to overflow and inundate surrounding areas.

The flooding affected hundreds of shop houses next to the Kapuas River in Pontianak.

Heavy rains and bad weather between November and December have been anticipated to cause flooding in Kalimantan, the local environment agency says.

Based on an analysis from the Meteorology, Climatology and Geophysics Agency, the rains would affect Kalimantan until next week, Kalimantan Environment Agency chief Basuki Widodo W Sambodo said.

Widodo said the bad weather was a result of a wind convergence from west to east passing through Sumatra, Kalimantan and Sulawesi.

"Heavy rains may cause floods in areas in Banjarmasin, Pontianak, Balikpapan and Samarinda," he said.