Saudi blogger Rasheed Abou-Alsamh (Rasheed’s World) has an article in The New York Times on the recent arrests in Saudi Arabia. In it, he quotes a ‘Western diplomat’ who says the arrests were the result of the Saudi authorities’ monitoring of jihadist websites.

Saudis Arrest 208 in a Sweep to Head Off Terrorist Attacks
RASHEED ABOU-ALSAMH

JIDDA, Saudi Arabia, Nov. 28 — Saudi Arabia announced Wednesday that it had arrested 208 people across the country who were suspected of having ties to Al Qaeda and had been planning attacks on oil facilities in the Eastern Province and killings of clerics and security forces.

The Saudi Press Agency quoted a statement from the Interior Ministry that said the arrests had taken place over the past several months. The suspects had formed six cells, one of which plotted to attack a logistical oil facility, according to Gen. Mansour al-Turki, an Interior Ministry spokesman.
…