Egypt’s interior ministry said that a security guard at the General Authority for Roads (GAR) was killed, and another guard was injured after two unknown assailants opened fire at a GRA office in Giza’s Maryoutiya area.
A third guard was able to avoid the shots by the the assailants.
Media outlets have earlier said that the victims were police officers who were shot by the perpetrators at a security checkpoint on the Cairo Ring Road.
No one has yet claimed responsibility for the attack.
Dozens of Egyptian policemen have been targeted in drive-by shootings carried out by Islamist militants in the last two years.
Egypt's army is waging a war on militants in parts of North Sinai, which has witnessed a decade-long insurgency that spiked after the ouster of Islamist president Mohamed Morsi in 2013.
Hundreds of security forces and army personnel have been killed in the troubled North Sinai. The army also says it has killed hundreds of insurgents during the same period.
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