After being engulfed in flames on Friday night, Preston Place Condos are in disrepair.

More than 100 firefighters worked for hours to quell the fire that had overtaken the 60-unit, four-story condo at 6225 W. Northwest Highway, WFAA  and Fox4News reported.

Dallas Fire-Rescue arrived at the scene at roughly 11:30 p.m. on Friday. Firefighters continued locating hotspots throughout the weekend, Dallas-Fire Rescue spokesperson Jason Evans told the Advocate in an email.

“Dallas Fire-Rescue efforts have impacted the structure to the point where isolated collapses continue to occur throughout the building,” he wrote. “The more the building is subject to, the more we have to confront the reality that there may not be anything salvageable left when it’s all said and done.”

It took 42 hours to completely extinguish the fire.

More than 100 residents, many of whom are elderly, are displaced because of the blaze, the Dallas Morning News reported. The American Red Cross is providing assistance to the neighbors and their pets.

One 89-year-old resident, named Jacqueline McDonald, is missing. Evans said firefighters are “exhausting all efforts” to locate her.

The cause of the fire has yet to be determined, but we will update this post with more information when it becomes available.

This post was updated at 1:45 p.m. Saturday, March 4, to include information from Dallas-Fire Rescue spokesperson Jason Evans. It was updated again Sunday, March 5, to include additional information about  local officials’ search for the condo’s missing resident and that the fire had been extinguished.