Three security personnel were injured during clashes with supporters of the now-banned Muslim Brotherhood group north of Cairo, a provincial security official said.
The clashes occurred on Friday afternoon during a tens-strong protest in the Nile Delta governorate of Sharqiya. The demonstrations were called for by a coalition supporting the once-ruling group to condemn the country's parliamentary elections that kicked off last week.
Provincial security chief Abdel Latif Hennawy told Aswat Masriya news website that protesters used fireworks and birdshot pellets, prompting fighting with riot police.
Three members of security forces were injured, while police arrested "a number of rioters," he added.
Following the 2013 ouster of Islamist president Mohamed Morsi, the Brotherhood group was declared a terrorist organisation, with thousands of its members and supporters thrown behind bars and hundreds killed.
Protests by Islamists have significantly decreased amid the crackdown.