Egyptian security forces have arrested a man suspected of taking part in throwing two young protesters off a residential building  in Alexandria, Al Arabiya correspondent reported.
Activists circulated on Saturday a video online showing what appeared to be Islamist supporters of ousted President Mohammed Morsi throwing two young men off a Sidi Jaber building during clashes in Egypt’s second largest city, Alexandria.
One of the young men was killed. He was identified as the 19-year-old Hamada Badr. Activists say he was celebrating Morsi’s ouster when he came into encounter with Muslim Brotherhood supporters.
Father of the slain teen said the pro-Mursi Islamists wanted to take vengeance against Hamada and his two other friends, because they were throwing bricks off the building against the Islamist crowds surrounding it at the time.
On Sunday, authorities in Alexandria said that it will deploy its security forces after Islamist groups such as the Muslim Brotherhood, from which Morsi hails, called for a protest in Sidi Jaber.
“Our duty is to secure the protesters and people living in the area. We will work to separate people in case clashes occur,” Al-Dostor newspaper reported General Amin Izzadin as saying.
On Friday, clashes between opponents and supporters of Morsi flared in Egypt, killing at least 46 people nationwide, with the heaviest death toll registered in Alexandria.