Saudi Arabia's ban of online functions on BlackBerry mobile phones is implemented.
Houthi rebels launch 16 missile and drone attacks on Saudi Arabian cities. An airstrike also hits an ARAMCO facility in Jeddah, setting fire to an oil storage facility near a Formula One racing track where drivers were preparing for the 2022 Saudi Arabian Grand Prix.
Germany's Federal Intelligence Service (BND) says Saudi Arabia is at risk of becoming a major destabilizing influence in the Arab world due to the diplomatic stance of some senior members of the House of Saud.
The United Arab Emirates will suspend some BlackBerry mobile services from October amid concerns that data from some equipment is being exported offshore and managed by foreign organisations. Saudi Arabia plans to suspend some services later this month.