Members of the Muslim Brotherhood clashed with members of "al-Daawa al-Salafiya" (Salafi Call) in Alexandria on Saturday following Eid al-Adha prayers.
Both parties altercated verbally when a Brotherhood rally passed by a prayer area set up by the Salafi call, then descended into a fight using weapons and chains, Aswat Masriya's witness reported.
Brotherhood members used derogatory chants against the Salafi Call and al-Nour Salafi Party and its leading figures, which were met by anti-terrorism, anti-terrorist groups, and anti-Brotherhood chants by the Salafi call youth.
Al-Nour Party ranked second biggest Islamist party in Egypt after the Muslim Brotherhood's Freedom and Justice Party (FJP), before the FJP was dissolved by a court order in August.
The party had declared its opposition to political isolation of the Muslim Brotherhood members, according to Nour party's presidential council member Nader Bakkar, days after a court ruling banned the Brotherhood in September 2013.
The Nour Party always rejected the idea of imposing political isolation on the National Democratic Party or those who belonged to it, Bakkar, an assistant to the party head, told Russia Today Radio.
Meanwhile, the Salafi Nour Party took part in an army-backed initiative to remove former President Mohamed Mursi from power on July 3, a step that was met with major disapproval from several Islamist parties in Egypt.
It later publicised its support for then-presidential candidate Abdel Fattah al-Sisi in the 2014 presidential elections, who was inaugurated president in June 2014.