PH
The prosecutor was being treated for injuries from flying glass, a police official told AFP news agency.
Two bodyguards were also injured in the attack, which targeted the vehicle in the Cairo suburb of Heliopolis.
Mr Barakat has referred thousands of Islamists to trial since the overthrow of President Mohammed Morsi in 2013.
Hundreds have been sentenced to death or life imprisonment, as part of a crackdown on supporters of the banned Muslim Brotherhood.
Jihadist militants have meanwhile stepped up their attacks on Egypt’s security forces.
Monday’s bombing is said to have involved an explosive device placed under a parked car near Mr Barakat’s convoy.
The prosecutor has received death threats in the past.
The Egyptian affiliate of the Islamic State group recently called for attacks on the judiciary, after the hanging of six militants.
