Sounds like it was a court ordered eviction. Which means the landlord had issued an eviction notice, or mortgage company a foreclosure notice and the occupants failed to move out voluntarily.
At that point the owner or mortgage company can go back to court and the court orders the constable to move the occupants out, by force if necessary.
When I was a Deputy Constable I had to assist in a couple of similar evictions. It was not something any of us enjoyed. 4951