'Ops Centre' is my reference, it is hardly that! The Animal Resource Department (buidling by parachute r/bt) is responsible for the TNR project.

They have government vets, pre op and post op facilities - still currently under renovation! The cats are taken there and assessed. Those fit for neutering are operated on and held for a minimum recovery period before being returned. Those unsuitable are humanely euthanised.

There have been many cases of cats not being returned, records are kept so theoretically you should be able to trace what happened to the cats.

How long ago did the cats disappear? Stupid question but is there major construction nearby, many cats move further on in these circumstances (or on to the site if they are lucky enough to find kind workers to feed them!)

The programme is being overseen by WSPA and The Qatar Cat Coalition, you can check with them for more information, through The Friends of the Environment Centre.