CAIRO -- Egyptian authorities have arrested a policeman pending an investigation into claims he beat up a lawyer in a Nile Delta city over a parking dispute.
The office of the Egypt's chief prosecutor, Hamada el-Sawy, said in a statement late Friday it had ordered the officer's arrest and detention for four days.
The incident sparked controversy after a picture of lawyer Ahmed Alwan went viral on social media earlier this week.
The image showed Alwan's right eye swollen, and a large gash with blood coming out under his left eye.
Dozens of lawyers gathered Thursday outside a police station in the city of Mahala el-Kubra, demanding the arrest of the officer.
The incident is the latest in a series of alleged police abuse.