Malaysian troops are searching houses and terrain for armed members of a Filipino clan embroiled in a three-week conflict in Sabah on Borneo island.

BBC: Malaysia troops hunt Filipino clan amid Sabah violence

Borneo island is divided among three countries: Indonesian territory in the south, two Malaysian states in the north and tiny Brunei on the north coast.

NPR: Ferry Capsizes In Malaysian River, 21 Missing

Malaysia Prime Minister Najib Razak, who has come under domestic pressure to bring an end to the incursion, said he had dispatched two additional battalions to Sabah, on Borneo island, Malaysia's Bernama state news agency reported.

BBC: Malaysia boosts Sabah security after Lahad Datu clashes

Carcasses of the baby-faced elephants were found near each other over the past three weeks at the Gunung Rara Forest Reserve, said Laurentius Ambu, director of the wildlife department in Malaysia's Sabah state on Borneo island.

NPR: 10 Dead Borneo Pygmy Elephants Feared Poisoned

After that, it was thought he would have little to fear in the comparatively sleepy backwater of Sarawak, on the island of Borneo.

BBC: The stabbed governor of Sarawak

Mr al-Bukhary, a close friend of the prime minister's, has built an extraordinary empire in a the five years since the crisis, including Malaysia's fast-growing new container port at Tanjung Pelepas, a hotel and property group, Pernas, mining companies, power companies, palm-oil companies and much else, including a controlling stake in the Bakun dam on the island of Borneo.

ECONOMIST: The big clean-up

The smog arrives around this time every year, as loggers and farmers on Indonesia's island of Sumatra and the Indonesian part of Borneo take advantage of the dry season to clear land by burning trees and scrub.

ECONOMIST: Will the neighbours ever dare to penalise the polluters?