What's behind that door?

So today was suppose to be Sunday photogroup outing. Chris, Ingrid and I decided to go and take pics of the mosques in Riffa. Parked the car and off we went. It was a beautiful mosque to photograph. See here. The security guard told us to stick to the one side and not take pics of the Government buildings. We were good and listened!
We then went walk about and took pics of the mosque in my blip and some of the shops nearby. When we got back to the car, we had an unmarked car behind us and out hopped a security man. We were asked for identification and phone numbers and he went back to his car and started phoning. Then returned and wanted to go through our cameras and see what we had photographed.
Was not a great experience. I love my sandpit but it seems things are getting rather tense here and security is being stepped up.
Not sure where to go blipping tomorrow or the next day!! Feel rather unsettled! Not a nice feeling!