The al-Qaida terror network has claimed responsibility for the suicide car bombing in which 17 people were killed in the Saudi capital of Riyadh on Saturday, an Arab newspaper reported.

An e-mail written by a purported al-Qaida leader has warned the terrorist network is preparing to stage devastating attacks against Americans during the Islamic fasting month of Ramadan.

An al-Qaida commander warned the terror network was about to stage major attacks in Saudi Arabia in an e-mail just a day before the deadly suicide bombings in Riyadh, an Arab magazine has reported.