Egypt's Supreme Administrative Court has upheld last summer's ruling that dissolved parliament just days before Mohammed Morsi was declared victor in the country's presidential election.

It ruled against an appeal by a former lawmaker who wanted the court to reinstate two-thirds of parliament, only excluding the third that was deemed to have been elected illegally.

The Saturday ruling upheld the decision of the Supreme Constitutional Court, which said parliamentary elections had incorrectly allowed party members to contest the third of seats set aside for independents.

Parliament convened once after its dissolution, on orders from Morsi, whose Brotherhood group controlled the most seats.

Morsi now holds legislative powers in the absence of parliament and after the forced retirement of generals he previously shared powers with.