An Egyptian prosecutor ordered on Monday the arrest of four people suspected of kidnapping and murdering a real estate agent in Giza governorate on Saturday.
Two other suspects – a former police officer and a terminated low-ranking police officer – were arrested on Sunday on suspicion of kidnapping and killing 28-year-old Farid Shawky.
A video shot in Giza's Mohandessin neighbourhood went viral on Saturday showing a man, whose wife later confirmed as Shawky, pleading for help as he leaned out of the door of a moving car.
Initial police investigations revealed that six suspects had kidnapped Shawky from a café near his home in 6 October city on the ouyskirts of Cairo.
Shawky's body was later found in Qalioubiya governorate north of the capital.
Initial forensic reports say the victim likely died of a severe head injury inflicted by a blow from the butt of a gun.