More than 140 of the defendants are in custody over the attack at the Kerdasa police station
A court in Egypt has upheld the death sentences of 183 Muslim Brotherhood supporters over a 2013 attack on a police station near Cairo.The men were convicted in the deaths of at least 11 officers in Kerdasa.
The attack took place after Egyptian military forces cracked down on protests over the ousting of Islamist President Mohammed Morsi in July.
Hundreds of death sentences have been passed on Mr Morsi's supporters since but none have been carried out.
More than 140 of the 188 defendants are already in custody, while the rest have been sentenced in absentia.
The court also sentenced a minor to 10 years in prison in the case and two other defendants were acquitted.
The verdict follows a recommendation by Egypt's top religious authority, the Grand Mufti, but it can be appealed.
Egypt has been fiercely criticised for its crackdown on Islamist supporters of Mr Morsi.
Hundreds were killed in the crackdown.