Egypt's interior ministry says it has arrested 22 members of the terrorist-designated Muslim Brotherhood group for inciting people against the state following the widely publicised murder of teen Mahmoud El-Banna.

The suspects had used the recent murder of the teenager in the governorate of Menoufiya to "incite the public against the state," the ministry said in a statement on Tuesday.

The killing earlier this month of El-Banna by another teenager after El-Banna stood up for a girl that the assailant was harassing sparked public outcry in Egypt in recent weeks.

The ministry said that the suspects who were arrested for inciting aimed to "provoke chaos and riots, block roads and disrupt traffic" in front of a court room in Shebin El-Koum where a trial session of the accused murderer was held in Menoufiya in the Nile Delta, the statement added.

The suspects were arrested in possession of inciting posters, melee weapons, two replica pistols and a replica machine gun, it added.