Gen. Eduardo Ano told The Associated Press that Malaysian Mahmud bin Ahmad reportedly channeled more than USD 600,000 from the IS group to acquire firearms, food and other supplies for the attack in Marawi. Money believed to be from illegal drugs also funded the uprising, he said.
Mahmud was wounded in the fighting last month and reportedly died on June 7, he said. A local militant leader, Omarkhayam Maute, also is believed to have been killed in the early days of intense fighting and troops were looking for their remains to validate the intelligence the military had received.
Malaysian authorities are trying to determine the number of Malaysians who joined the siege but said at least four may have been killed in clashes.
Two other rebel leaders, top Filipino militant suspect Isnilon Hapilon and Maute's brother, Abdullah, were still fighting in Marawi, Ano said.
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A former Malaysian university professor who became radicalized and received training in Afghanistan, Mahmud appeared in a video showing militant leaders planning the Marawi siege in a hideout, a sign of his key role in the uprising. The AP obtained a copy of the video, which was seized by troops May 23.
Troops since then have killed about 280 gunmen, recovered nearly 300 assault firearms and regained control of 85 buildings. Many of the taller buildings were used as sniper posts to slow down the advance of government forces, the military said.
At least 69 soldiers and police and 26 civilians have died in the fighting. Only four villages in Marawi remain in the hands of the militants, out of the 19 of 96 villages across the lakeside city of 200,000 people that the black flag-waving militants had occupied.
Ano said the battle was taking longer because the militants were using civilians as human shields.
"We can just bomb them away or use napalm bombs to burn everything, but then, we will not be any different from them if we do that," he said.
The audacious attack by the heavily armed militants and their ability to hold on to large sections of a city for weeks surprised the government and sparked fears among Southeast Asian countries that the Islamic State group was moving to gain a foothold in the region.
Facing his worst crisis, President Rodrigo Duterte has declared martial law in the south to deal with the Marawi siege.
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