Three senior 'Hasm' leaders were killed in an exchange of fire with police in 15th of May city, southern Cairo, the Ministry of Interior announced on Monday.

The National Security Sector was notified about movements of 'Hasm' leaders in an under-construction area in 15th of May city and their intentions to wage terror attacks shortly, the Interior Ministry said on Monday.

The shoot-out erupted when the terrorists opened fire on the police, propelling them to fire back.