Egypt has executed nine men convicted of killing the country’s top public prosecutor, Hisham Barakat, in 2015.

The men were among 28 sentenced to death for their alleged involvement in the car bomb attack that targeted Barakat’s convoy in the capital, Cairo.

Amnesty International said they were convicted after a grossly unfair trial marred by allegations of torture.

Their executions, the human rights group added, were “a testament to the magnitude of injustice in the country”.

Egyptian criminal courts have sentenced hundreds of people to death in cases stemming from alleged political violence since July 2013, when the military overthrew the country’s first democratically elected president, Mohammed Morsi.