http://www.reuters.com/article/2012/12/26/uae-saudi-plot-idUSL5E8NQ2KZ20121226 My guess is they were the same ones who done the bomb in Riyadh few months ago that the Saudi's tried to convince us was a fuel tanker exploding under a motorway bridge.
Those detained were reportedly both UAE and Saudi nationals and were members of what was termed a "deviant group". The phrase "deviant group" is often used by authorities in Saudi Arabia to describe al-Qaeda members. According to the statement, the cell was planning actions against targets in both the United Arab Emirates and Saudi Arabia. The United Arab Emirates is a major oil exporter and a key Western ally in the region. It detained more than 60 people in September who it accused of trying to overthrow the authorities and establish an Islamic state. http://www.bbc.co.uk/news/world-middle-east-20845468
