Tanks back on Cairo streets.
The military ordered troops and armoured vehicles be deployed around the Defence Ministry, in the capital Cairo, after clashes erupted for the second time in a week.
The building has become a focal point for protesters looking to vent their anger over the army's handling of Egypt's transition from military rule to civilian government. Eleven people were killed in fighting on Wednesday.
A curfew has also been put in place and military prosecutors have rounded up and detained more than 300 protesters, who face accusations including attacking troops and disrupting public order. The crackdown is one of the largest mass arrests since the uprising last year.
Many of the protesters believe the army is seeking to delay or manipulate upcoming presidential elections.
Officials dismissed such allegations, insisting they are sticking to the timetable of handing over power to a new president on July 1.
"Our mission ends with a successful handover of power and we will not let anyone change the declared schedule," an army source said.
The latest clashes, in which the soldier was killed and 140 people injured by tear gas, rocks of live fire, broke out on Friday during an attempt by protesters to march on the ministry.
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