An Egyptian police officer was killed Tuesday while trying to defuse a bomb outside a petrol station in Cairo, police said, with jihadists claiming responsibility.
Three employees were also wounded when the device, hidden in a flower pot, exploded near a police station on Al-Harram street, a busy avenue leading to the pyramids.
A video posted on the website of Egyptian daily Youm 7 shows the officer dressed in protective gear being thrown metres away as the device explodes in his hands.
The jihadist group Ajnad Misr (Soldiers of Egypt) claimed on Twitter that it had placed the device, saying it was targeting police officers.
Earlier Tuesday two policemen were shot dead by gunmen in a pre-dawn attack while they were on patrol in the southern city of Minya.
Policemen and soldiers have faced regular militant attacks since the army ousted Islamist president Mohamed Morsi in July 2013.
Hundreds have been killed in attacks claimed by jihadist groups in retaliation for a government crackdown targeting Morsi's supporters.