Hundreds of people can't get into their apartments three days after a massive, six-alarm fire tore through a Fort Worth apartment​ complex.

The United Way and a Fort Worth nonprofit have teamed up to raise money for 834 people displaced in an six-alarm apartment fire Monday. A large fire ignited inside the The Cooper apartment complex in Fort Worth around 1:30 p.m. while some residents were still inside, said Craig Trojacek, a spokesperson for the Fort Worth Fire Department.

Hundreds of people who lived in building one still can't get their belongings. Fort Worth Fire spokesperson Craig Trojacek said a few units reported having pets, and crews have not been able to get into those apartments because the fifth floor collapsed to the second floor in part of building one.