CAIRO, June 25 (Xinhua) -- Egyptian security forces arrested Tuesday eight people suspected of killing four Shiites in a sectarian conflict in Giza governorate, official MENA news agency reported.
Security efforts were also intensified to arrest the rest suspects.
On Sunday, dozens of Sunnis from Abu Musallam village burned a house of 15 Shiites in a village in Gaza after one of the latter delivered a religious speech, which was deemed by Sunnis as offensive and insulting to the companions and the wife of Prophet Mohamed.
The Sunni Muslims hurled the house with stones and Molotov cocktails. Four of the Shiites who escaped the house were caught by the Sunnis and beaten to death.
Concerns were raised in Egypt after the 2011 political upheaval that toppled ex-president Hosni Mubarak over the spread of the Shiism in the Sunni-dominated Muslim country, particularly after the country's gradual restoration of ties with Shiite-oriented Iran following three decades of rift.