Military police have arrested eight people over an arson attack on the Ahmed Shafiq campaign headquarters in Dokki, Giza, a security source at Giza police station said Monday.

The suspects are yet to be named.

The source also denied earlier reports that well-known activist Alaa Abdel-Fattah had taken a prominent role in the events, and added that no official complaints had been received over his alleged involvement.

The Giza investigations bureau is currently questioning the suspects.

The incident took place following a number of protests across the country in response to the Supreme Presidential Electoral Commission's (SPEC) official announcement that Mubarak-era prime minister Ahmed Shafiq and Muslim Brotherhood nominee Mohamed Morsi are to compete in the presidential election run-offs on 16 and 17 June.