Jens Buettner, AP
Members of the the 'MVgida' (Mecklenburg-Western Pomerania against the Islamization of the West) anti-Islam movement that is linked to PEGIDA demonstrate with a banner that reads 'Islamists not welcome' in Schwerin, northern Germany, Monday, Jan 12, 2015. (AP Photo/dpa, Jens Buettner)

PARIS — A French court has upheld the Paris police chief's order to ban a planned demonstration against radical Islamists in the wake of France's worst terrorism in decades.

The Paris administrative tribunal ruled in an accelerated judgment Saturday that police were authorized to ban Sunday's "Islamists out of France" rally. Two groups that promote secular and republican values were key organizers of the planned demonstration.

A police official confirmed the ruling after Paris police chief Bernard Boucault ordered the ban because the rally might incite civil unrest.

The decision came as municipal leaders begrudgingly assented to secret burials of the two brothers behind the deadly shootings at the Charlie Hebdo newspaper last week. That attack was part of a three-day terrorism spree by three gunmen who killed 17 people in Paris.