An Orthodox priest has been seriously wounded in a shooting in the French city of Lyon, officials say.
A suspect matching witness descriptions was later taken into custody. Officials could not immediately confirm whether he was the assailant.
The motive remains unclear. Authorities have opened an investigation of attempted murder.
The incident came days after three people were killed in a knife attack at a church in the southern city of Nice.
French President Emmanuel Macron called the killings an “Islamist terrorist attack” and deployed thousands of extra soldiers to protect public sites, including places of worship.
The shooting in Lyon happened at about 16:00 local time (15:00 GMT) on Saturday when the priest was closing his church, officials said.
The attacker, who reports said was armed with a sawn-off shotgun, fled the scene.
The French interior ministry said security and emergency personnel were on the scene, and urged people to avoid the area.
In a statement on Saturday night, Lyon’s public prosecutor, Nicolas Jacquet, said “a person who could correspond to the description given by the initial witnesses has been placed in police custody”.
He added that the suspect had not been carrying a weapon at the time of his arrest. Investigators are trying to determine his identity.
Lyon Mayor Gregory Doucet earlier told reporters: “We don’t know at this stage the motive for this attack.”
The priest has been identified as Greek citizen Nikolas Kakavelakis. He is reported to be in a serious condition.
Prime Minister Jean Castex said the government was committed “to allow each and everyone to practice their worship in complete safety and in complete freedom”.
