The Iranian government says computers running key parts of its oil industry have been targeted in a cyber-attack. It said Iran's oil ministry and the main oil-export terminal had been disconnected from the Internet as a precaution. The government said no serious damage was done, and the production and export of oil were unaffected. A special committee has been set up to deal with cyber-attacks.

A Jordanian relief agency Kitab and Sunnah says Syrian troops attacked a group of about 900 refugees trying to flee from Syria into Jordan on Saturday and Sunday. A spokesman said dozens of Syrians were taken to hospital after arriving across the border with burns and gunshot wounds. Dale Gavlak in Oman has spoken to the agency.

Kitab and Sunnah spokesman Mohammed Ahmed Iyad said about 195 Syrians were injured by Syrian troops, who shot at the group as they tried to flee to the Jordanian border town of Ramtha early on Sunday. He said local hospitals are treating the wounded. The refugees told him that Syrian forces arrested dozens among their group, including around 50 women. Relief workers say that Ramtha has seen an influx of unaccompanied Syrian children entering Jordan, sparking fears that their parents and relatives had either been arrested or killed in the attack.

World News from the BBC

President Obama is introducing new American measures intended to prevent the authorities in Iran and Syria using sophisticated communications equipment against dissidents. Mr Obama said the two countries were conducting violent campaigns against their own people assisted by what he called the "malign use of technology".