Egyptian security officials say 40 supporters of ousted Islamist President Mohammed Morsi's Muslim Brotherhood have been arrested in Cairo and Egypt's second city Alexandria during protests.

The officials say protesters shouted slogans against the police and armed forces and blocked traffic in scattered marches in Alexandria after Friday prayers. Those arrested were in possession of "incendiary leaflets," police say. Security forces say they found buckshot rounds and a knife on demonstrators arrested in Giza, a district of the capital. The officials spoke anonymously because they were not authorized to brief reporters.

More than a thousand Brotherhood supporters have been killed and thousands more imprisoned since Morsi was ousted by the military more than a year ago. His supporters still regularly hold small, scattered demonstrations.