Six Muslim Brotherhood members were killed during a security raid on their hideout in 6 October city on Tuesday.
According to a brief statement issued by the Egyptian interior ministry, the members exchanged fire with security forces when they stormed their hideout.
"They were planning to implement a set of terrorist operations against churches, key institutions, military troops and security forces in the near future to spread chaos in the state and intimidate citizens," the statement added.
Egyptian authorities officially designated the Muslim Brotherhood group a terrorist organization in 2013.