manila philippine president rodrigo duterte declare southern city marawi liberate pro-islamic state militants tuesday although military say 20-30 rebel hold 20 hostages still fight rouse address soldier day kill two commanders rebel alliance duterte say would never allow militants stockpile many weapons marawi free time heal wound rebuild hereby declare marawi city liberate terrorist influence mark begin rehabilitation duterte wear camouflage cap dark sunglasses say unannounced visit isnilon hapilon want unite state islamic state southeast asian emir omarkhayam maute one two brothers central alliance kill target operation monday body recover identify authorities say 148-day occupation mark roman catholic-majority philippines big security crisis years trigger concern mountains jungles porous border island mindanao could become magnet islamic state fighters drive iraq syria 1,000 people mostly rebel kill battle heart city 200,000 level air strike duterte say liberation cause celebration late apologize people marawi destruction say alternative arm force chief eduardo ano say remain gunmen law enforcement matter military spokesman restituto padilla describe stragglers way get anymore way anyone get padilla tell news channel anc padilla say military believe malaysian operative mahmud ahmad marawi could certain say mahmud threat dr. mahmud academic fighter padilla say feel problem security experts say otherwise believe mahmud 39 recruiter fundraiser train al qaeda camp afghanistan could replace hapilon islamic state point-man southeast asia another leader abdullah maute yet account intelligence indicate die august air strike though body find defence officials say core leadership key recruit young fighters arrange extremists indonesia malaysia singapore beyond join push carve east asian wilaya islamic state province hapilon team moneyed maute clan stronghold lanao del sur one philippines poor provinces bring fighters radical faction abu sayyaf group good know banditry defence secretary delfin lorenzana estimate marawi operations cost billion pesos 97.5 million say reconstruction could start january still stragglers structure still unsafe unexploded ordnance improvise explosive devices say radio marawi occupation set alarm bell ring philippines militants surprise security force combat prowess volume arm ammunition stockpile ability withstand intensive air strike aid u.s. surveillance drone technical support 51 pesos philippine president declare marawi liberate battle go