18 People Killed In Egypt Clashes

Three police cadets were among the dead and dozens of protesters were also injured.

The clashes follow the killing of an activist in a march in the capital Cairo on Saturday.

The protests were staged to mark the 4th anniversary of Egypt's 2011 uprising, which toppled long-time leader Hosni Mubarak.

Security in major cities was tightened ahead of the anniversary, and key locations in Cairo were blocked-off.

Dozens of people were killed in similar protests last year.

By Tom Omulo.