Two people were killed and 89 others injured in clashes that erupted Sunday outside Egypt's main church in Cairo during a mass funeral of several Christians who have recently been killed in a sectarian brawl, a health ministry official told Xinhua on Monday.

"The death toll resulted from clashes erupted outside Cathedral church rose to two," Khaled al-Khatib, the ministry's director of emergency care department told Xinhua, adding the number of injuries rose to 89. Investigations revealed that the first dead man died from a shot in the chest, but the reasons behind the second dead man haven't been uncovered yet.

According to a press statement issued by the Health Ministry, most of the injured people were wounded from gun shots.

The clashes erupted Sunday during Coptic funeral procession, which was held for four Christian victims killed overnight Friday. Some Christian children allegedly drew crosses on a wall of an Islamic institute in Khosoos town of Qalyubiya, near the capital, which led to the tragic confrontation.

Security forces intensified its deployment outside the cathedral, parking two armored vehicles in front of the main gate and using gas tears to disperse the Coptic who threw stones at the cathedral fuming with black smoke due to a blaze around its walls.