CAIRO, Jan 14 (Reuters) - One man was killed in clashes between security forces and supporters of ousted President Mohamed Mursi's Muslim Brotherhood on Tuesday, the first day of a constitutional referendum, security sources said.
Mahmoud Sayed Gomaa, 25, was killed during a protest against the referendum near a polling station in the province of Bani Suef, south of Cairo.
The referendum is the first ballot since the military overthrew Mursi on July 3 after mass protests against his rule. (Reporting by Asma Alsharif; Editing by Janet Lawrence)
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