Arsenal have avoided a Uefa charge after a flare was lit in the away end following Alex Iwobi's opening goal in the 3-1 Europa League last-16 first-leg defeat to Rennes last week.
However, the French side have been hit with three separate charges following the match at Roazhon Park, including the setting off of fireworks.
Rennes have also been charged with a field invasion by supporters and the blocking of stairways, according to Uefa's latest disciplinary update released on Monday evening.
European football's governing body also confirmed that Ajax would face two charges entitled 'throwing of objects' and 'acts of damages' following their memorable 4-1 Champions League last-16 second-leg victory over Real Madrid at the Santiago Bernabeu on March 5.
The cases will be dealt with by the Uefa Control, Ethics and Disciplinary Body on 28 March.
Rennes travel to north London on Thursday for the second leg against Arsenal, looking to protect their two-goal advantage secured against the 10-man Gunners through Benjamin Bourigeaud, Ismaila Sarr and an own goal from Nacho Monreal.
