A suspected homemade bomb exploded at a tram station in eastern Cairo wounded at least one person on Saturday, Egyptian security officials said.
Another homemade bomb was defused at the same station in Heliopolis suburb, the security officials said, according to Agence France-Presse.
Despite militants stepping up attacks since the military ousted Islamist president Mohammmad Mursi in July, most of the attacks have not targeted civilians, Al Arabiya reported.
Instead, they have been aimed at police and army checkpoints around the country and most recently, tourists.
In February, a bomb that struck a bus carrying tourists near the Taba border crossing in South Sinai killed three people, including three South Koreans.
The al-Qaeda-inspired Ansar Beit al-Maqdis claimed the attack.
The Sinai-based group said the attacks were in revenge for a deadly crackdown by the security forces on Mursi supporters.