A homeless man and woman rest inside concrete drainage pipes in a slum area on April 26, 2017 in Manila, Philippines. (Photo by Ezra Acayan/Barcroft Images)





Residents fleeing the besieged city of Marawi travel to an evacuation center, Friday, May 26, 2017, in Bal-oi township, southern Philippines. Philippine army generals say dozens of Islamic State group-linked extremists have been killed in two days of fighting in a southern city that has been under siege since one of Asia's most-wanted militants evaded capture and dozens of rebels came to his aid. (Photo by Bullit Marquez/AP Photo)





Residents fleeing the besieged city of Marawi travel to evacuation centers, Friday, May 26, 2017, in Bal-oi township, southern Philippines. (Photo by Bullit Marquez/AP Photo)





A family enjoying a makeshift beach that was used be a garbage dump near Manila bay on April 25, 2017 in Manila, Philippines. Metro Manila has been facing an increasing amount of floods due to overuse of groundwater causing the city to sink, as well as rapid rise in sea levels which has been over double the global average. The Philippines has been among the top five countries vulnerable to climate change over recent years while reports state coastal areas including parts of Manila are already below sea level causing further devastation during natural disasters, such as Typhoon Haiyan which killed thousands of people and made millions homeless in 2013. In Manila, slum dwellers face an increasing amount of threat living along the coast as floods and storms have been exacerbated flooding while there is little the residents can do except relocate to higher ground. (Photo by Jes Aznar/Getty Images)





In this June 9, 2017 photo, a girl plays at an evacuation center on the outskirts of Marawi city, southern Philippines. Nearly every day for the past three weeks, the Philippine military has pounded the lakeside town of Marawi with rockets and bombs as it tries to wipe out militants linked to the Islamic State group in some of the most protracted urban combat to hit this volatile region in decades. (Photo by Aaron Favila/AP Photo)





Displaced residents while away their time at an evacuation center in Saguiaran township, Lanao Del Sur province in southern Philippines Friday, June 23, 2017. Tens of thousands of residents are now housed in different evacuation centers as government troops fight with Muslim militants who laid siege to Marawi city a month ago. (Photo by Linus Guardian Escandor II/AP Photo)





A man pushes a trolley that transports commuters along a railroad track in Manila, Philippines February 21, 2017. (Photo by Erik De Castro/Reuters)





Commuters ride a makeshift trolley over a railroad bridge as a cheaper and faster alternative mode of transportation in metro Manila, Philippines January 25, 2017. (Photo by Romeo Ranoco/Reuters)





Commuters ride on a trolley along a railroad track in Manila, Philippines February 21, 2017. (Photo by Erik De Castro/Reuters)





A girl takes part in a local Lenten ritual called “Moriones” in Mogpog, Marinduque, Philippines April 12, 2017. (Photo by Erik De Castro/Reuters)





People frolic at the beach to celebrate Easter Sunday in Tanza, Philippines April 16, 2017. (Photo by Erik De Castro/Reuters)





Residents are pictured with their bodies covered in sand at the beach as they celebrate Easter Sunday in Tanza, Philippines, April 16, 2017. (Photo by Erik De Castro/Reuters)





People frolic by the beach to celebrate Easter Sunday in Tanza, Philippines April 16, 2017. (Photo by Erik De Castro/Reuters)





Government troops walk past a mosque before their assault with insurgents from the so-called Maute group, who have taken over large parts of Marawi City, southern Philippines May 25, 2017. (Photo by Romeo Ranoco/Reuters)





A public transport vehicle carrying residents is driven past a marker towards an evacuation center after government troops continued their assault on fighters from the Maute group who have taken over large parts of Marawi city, southern Philippines May 26, 2017. (Photo by Romeo Ranoco/Reuters)





Residents who were displaced due to fighting between government soldiers and the Maute militant group, carry plastic containers of water in Marawi City in southern Philippines May 28, 2017. (Photo by Erik De Castro/Reuters)





Residents who were displaced due to fighting between government soldiers and the Maute militant group, display a white flag at a house in Marawi City in southern Philippines May 28, 2017. (Photo by Erik De Castro/Reuters)





Members of the Philippine National Police Special Action Force ride on a truck in Iligan, as government forces continue their assault against insurgents from the Maute group, who have taken over large parts of Marawi City, Philippines June 24, 2017. (Photo by Jorge Silva/Reuters)





A Philippines army soldier stands on a tank inside the city hall compound in Marawi as government forces continue their assault against insurgents from the Maute group, who have taken over large parts of Marawi City, Philippines June 25, 2017. (Photo by Jorge Silva/Reuters)





A Philippine army soldier eats a watermelon while patrolling in Iligan, as government forces continue their assault against insurgents from the Maute group, who have taken over large parts of Marawi City, Philippines June 24, 2017. (Photo by Jorge Silva/Reuters)





Residents fleeing the besieged city of Marawi are questioned at a checkpoint by government soldiers, Friday, May 26, 2017, in Bal-oi township, southern Philippines. (Photo by Bullit Marquez/AP Photo)





Displaced residents fleeing by a truck to safer areas stop by a roadside as government troops battle with Muslim militants Monday, May 29, 2017 in Marawi, southern Philippines. Philippine forces say they now control most of the southern city where militants linked to the Islamic State group launched a bloody siege nearly a week ago. Presidential Spokesman Ernesto Abella said Monday that only small areas of Marawi are under militants' control. (Photo by Bullit Marquez/AP Photo)





Fleeing residents wait for their turn to be inspected by police as they flee Marawi city Thursday, May 25, 2017 in southern Philippines. (Photo by Bullit Marquez/AP Photo)





Johainah Nasrodeng, 5, writes in her notebook at a makeshift classroom for student evacuees at the Pantar Central Elementary School in Pantar, Lanao del Norte on the southern island of Mindanao on June 6, 2017. The schoolchildren, some 238 of them with their parents fled by foot for eight hours from Marawi City to Pantar municipality in a bid to escape heavy fighting. With bomb-proof tunnels, anti-tank weapons hidden in mosques, human shields and a “mastery” of the terrain, Islamist militants holed up in a southern Philippine city are proving a far tougher opponent than military chiefs expected. (Photo by Noel Celis/AFP Photo)





Residents evacuate to safety after a Muslim militant siege in Marawi city, southern Philippines, Thursday, May 25, 2017. Army tanks packed with soldiers rolled into the southern Philippine city Thursday to try to restore control after ISIS-linked militants launched a violent siege that sent thousands of people fleeing for their lives and raised fears of extremists gaining traction in the country. (Photo by Bullit Marquez/AP Photo)





Devotees wear costumes made of banana leaves as they head to church to attend mass as part of a religious festival, in honor of St. John the Baptist, also known locally as the “mud people” festival, in Aliaga town, Nueva Ecija province, north of Manila, on June 24, 2017. Farmers coated in mud paraded in Philippine villages on June 24 to mark one of the Catholic nation's most colourful religious festivals. (Photo by Noel Celis/AFP Photo)