Explosions outside Cairo University killed two people, including a police brigadier-general, on Wednesday in what appeared to be a militant attack targeting security forces.
A group calling itself Ajnad Misr, or Soldiers of Egypt, claimed responsibility for the blasts, which follow a string of operations launched against police and soldiers since the army ousted Islamist president Mohamed Morsi in July.
The fast-growing insurgency threatens the security of the most populous Arab nation ahead of a presidential election in May – as well as the vital tourist industry.