The Saudi capital Riyadh is the Middle East’s most active city on Twitter, according to the Paris-based analyst group Semiocast. The firm released numbers Monday based on a study conducted on a sample of more than one billion public tweets posted to the social network from June 1 to June 30, 2012.

The study shows that the number of Twitter’s registered users in Saudi Arabia grew by more than 93 percent in six months, reaching 2.9 million users who contributed to growth in the use of Arabic language on the service. Arabic now ranks as the 6th language with 2.8 percent of all public tweets posted in June of this year.