CAIRO: One person was killed Friday when an explosive device exploded in eastern Cairo, an Egyptian security force said.
The bomb exploded at a motorbike in the al-Doweika district, injuring the driver, who later succumbed to his wounds, the source said.
According to the source, the bomb went off as the driver, an alleged Muslim Brotherhood member, planned to use it in attacking police facilities.
The blast came two days after unofficial results showed that former army chief Abdel-Fattah al-Sisi had won a resounding victory in Egypt's presidential election.
In December, Egyptian authorities branded the Muslim Brotherhood, the group from which ousted president Mohamed Morsi hails, a "terrorist" group following a string of attacks in the country.
The Brotherhood, for its part, denies involvement in violence and says it is committed to peaceful activism.
Egypt has been dogged by instability since the army ousted democratically elected Morsi last July following massive protests against his one-year rule.
While supporters describe Morsi's ouster as a "military coup", opponents term it a "military-backed revolution".