The protests yesterday signalled increasing tension in the deeply polarised nation ahead of mass protests demanding the ouster of the president, Mohammed Morsi, who marks his first year in power June 30.
On Sunday, Morsi appointed 17 new governors, including seven members of the Brotherhood and one from an ex-militant group to rule the ancient city of Luxor. That appointment outraged Luxor residents, as the governor's group claimed responsibility for a 1997 massacre of dozens of tourists there.
Demonstrators sealed off gates of governors' offices around the country.
Security forces fired tear gas to separate the two sides in the Nile Delta city of Tanta in Gharbiya province. Fighting broke out after opposition protesters chained the gate to the new governor's office in a symbolic rejection of his appointment. Dozens were injured, including journalists, according to the deputy health minister in Tanta, Mohammed Sharshar.
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The new governor, Ahmed el-Baylie, a leading Muslim Brotherhood member and chief recruiter, managed to enter his office after supporters, armed with homemade guns, swords and knives, clashed with rock-throwing protesters to clear them away. Witnesses said an activist took off her shoes and hit the governor in the head, prompting his supporters to attack her.
A private daily, Al-Masry Al-Youm, reported that protesters chased Muslim Brotherhood supporters in the streets, snatched three of them and dragged them down.
In the industrial city of Mahallah al-Koubra, also in Gharbiya province, protesters blocked a mosque where a Muslim Brotherhood cleric was scheduled to visit and clashed with Brotherhood members.
According to witnesses, protesters set fire to a car of another Muslim Brotherhood governor, Saad el-Husseini, which was carrying tear gas canisters. The car exploded and a cloud of tear gas billowed into the sky. The governor was not in the car, and no one was hurt.