Updated

An Egyptian rights group says police have detained 13 people including five lawyers, accusing them of assaulting police in the Mediterranean city of Alexandria.

The arrest inside the police station is rare instance in which lawyers face potential criminal charges. The opposition says there is an expanding crackdown on anti-government activists.

The arrests Saturday on accusations that include insulting security officials and illegal assembly prompted an angry response from lawyers at Cairo's Bar Association, who demanded an apology from the police.

The Haqanya Center for Rights said the detainees are also accused of attempting to free other detainees held at the police station.

The lawyers were at the station to represent activists reportedly arrested by members of a political party affiliated with Egypt's Muslim Brotherhood and handed to the police.