Del Rosario said the government decided to file expropriation proceedings after all efforts to negotiate to buy the land failed.
“The cost of land was about P200 per square meter before the siege of Marawi. Now the owner is selling it about P10,000 per square meter,” he said.
Del Rosario said they also have a problem with the titles presented by the alleged landowners.
The Dansalan College and Carmelite Sisters also claimed ownership of portions of the six hectares of land around the old city hall.
Fedelinda Tawagon, president of the Dansalan College, said the proposed military camp encroached a portion of the 11-hectare farm of the school.
Tawagon said the school wanted compensation should the government use their land for the military camp.
Dansalan College is heavily damaged during the five-month siege with most of it 18 buildings, including a four-story classroom building, destroyed or damaged.