A bomb targeting a police vehicle on a road in Egypt's Kafr El-Sheikh killed a civilian motorist who was in the vicinity of the explosion and injured three policemen Friday evening, Egyptian news channel Al-Nahar Al-Youm reported.
The four were transfered to Kafr El-Sheikh hospital.
This is the second bombing targeting police to take place in Egypt on Friday, as another explosion killed six policemen in Giza's Haram district earlier in the day.
An Egyptian militant group called Hasm claimed responsibility for the Giza bombing in a statement issued on their website.
The interior ministry's statement said that the Giza blast killed two police officers, a low-ranking policeman and two conscripts.
Three other policemen were injured and were transferred to hospital.