MARAWI, Philippines >> Thousands of displaced remain in emergency shelters and the threat of Islamic extremists and unexploded bombs lingers in the rubble of a southern Philippine city, where survivors on Wednesday remembered a disastrous five-month siege by Islamic State group-aligned fighters that began a year ago.

The Rev. Teresito Soganub, who survived 117 days of captivity by the extremists in Marawi city, said that aside from the devastation, it would take years for him and other civilians to overcome the horror of having lived through airstrikes and gunbattles that threatened them day and night.

“I’m still very, very far from a full recovery,” Soganub said by telephone. “If it takes long to rebuild and reconstruct, it’s more difficult to deal with this psychological and psychiatric trauma.”

The government is finalizing a plan to rebuild the most devastated commercial and residential districts, where the carcasses of pockmarked homes, buildings and mosques stand eerily and gathering weeds in an urban wasteland guarded by troops.

The city’s journey back to normalcy may take years at a huge cost, said officials, some of whom have warned that if the rehabilitation falters, the restiveness it would generate could be exploited by Muslim militants.

“There were lots of bullets, a lot of cannon fire and airstrikes that targeted us because we were with the IS group that was being pounded by troops,” Soganub said from his southern home province, where he held Mass with family and friends. “Each day of the 117 days, 24 hours, we were facing death every time and our lives depended on the temperament of our hostage takers.”

Residents, officials and military officers released dozens of white balloons and doves into the blue sky from a government complex in lakeside Marawi and prayed for peace and recovery.

The May 23 siege that was crushed in October killed more than 1,100 mostly militants, left the mosque-studded city’s heartland in rubbles, prompted President Rodrigo Duterte to place the southern third of the country under martial law and reinforced fears that the Islamic State group was gaining a foothold in the Asian region. The months of intense fighting forced hundreds of thousands of residents of Marawi and outlying towns to flee for their lives.

While many have returned home after the attack was quelled, thousands more whose houses were destroyed in the main battle area that remains off-limits to civilians are still living in evacuation centers and temporary shelters, officials said. At least 50 people are still listed as missing and many human remains have not yet been identified and have been buried in numbered graves.

A regional official, Zia Alonto Adiong, said it was crucial to keep the public informed.

“One day in an evacuation center is already too long for someone who has lost everything,” Adiong said. “I think the frustration comes from the fear of expulsion, fear of not knowing what’s going to happen.”

Presidential adviser Jesus Dureza called for patience after some disgruntled Marawi residents held a noisy protest.

“We are working, government is doing its best to restore as much as possible what was destroyed and I think we are on the road,” Dureza said. “But we’d like to call on all those who have gone through suffering to please be patient. There is no magic formula here. There is no reconstruction that will happen overnight. There will be a lot of challenges. Not everybody will agree, there will be contrary voices and feelings.”