A car has crashed into the Grand Mosque of Colmar late Saturday, damaging the gate and entrance, according to the prefecture of Haut-Rhin.
The driver of the car was arrested by police after receiving a stab wound, according to I24 News media outlet.
It remains unclear if the man stabbed himself or he was attacked by another person.
Some witnesses were cited by local media as saying the driver of the car "cried Allah Akbar".
After the incident, police cordoned off the area around the mosque.
It is uncertain whether the incident was an attack or a suicide attempt.