Police are investigating the possibility that five more homeless people may have died in a blaze that claimed at least two lives.
Fire crews have to wait until the building is made safe
Fire crews discovered a body on Wednesday morning after being called to the fire at a disused factory building.
A second body was later found inside the Hamilton Reid building in Black Horse Lane, Hanley, Stoke-on-Trent.
The bodies cannot be reached until the building is made safe. Six people have been arrested and released on bail.
The five men and a woman were arrested on Wednesday.
They include a 24-year-old man, and the others are aged between 19 and 44.