Violent clashes in the Nile Delta city of Mansoura killed at least one person and injured scores of Egyptians on Wednesday, just hours before President Mohamed Morsi's big speech, said Egypt's Ahram Online.
The unrest also came days before a massive opposition rally scheduled for June 30, an event that has authorities so concerned that they are already sending military reinforcements near major cities.
More from GlobalPost: Egypt braces for June 30 opposition protest
It was not immediately clear what started the violence in Mansoura, but Egyptian state television said security forces resorted to teargas to try and disperse the crowds, according to Ahram Online.
Khaled El-Khatib of the local health ministry identified the person killed as Abdel-Hamid Sadek and said he died of birdshot wounds, reported Ahram Online.
Organizers of the June 30 rally are calling for Morsi's removal and fresh elections to be held exactly a year after the Muslim Brotherhood-backed leader was voted into office.
Morsi is expected to address their concerns in his speech late Wednesday.