A bomb exploded on Thursday evening near a central mosque in the Nile Delta city of Tanta, injuring 11 people, said Egypt's health ministry.
Mohamed Sultan, head of emergency and ambulance services, said there were no critical injuries and no deaths reported so far, reported Ahram Arabic news website.
Meanwhile, a source at the ministry of interior told Ahram Arabic news website that two home-made bombs exploded at 6:15PM near the mosque shattering restaurants' windows. The source added that a police officer was among the injured.
The explosion took place near Al-Sayyed Al-Badawi mosque, the 13th century revered Sufi Sheikh, as thousands of people were marking the last night of a week-long celebration of El-Baddawi Mouled (birthday).
Tanta is the capital city of Gharbiya governorate in the central Delta region.
The event was expected to be attended by the city’s governor and the local authorities.
Late Tuesday, an improvised bomb blew off in central Cairo, injuring 16 people.
Many cities in Egypt have been hit by bomb attacks over the past year following the ouster of Islamist president Mohamed Morsi in July 2013.