Nice attack: Grief and anger in France after church stabbings
Security across France tightens after a suspected Islamist militant stabs three people to death.
Flowers and candles have been placed outside the church in the southern French city of Nice where three people were stabbed to death.
President Emmanuel Macron said Thursday's stabbings were an "Islamist terrorist attack". He is to hold an emergency meeting with top ministers.
The 21-year-old Tunisian suspect arrived in the city the night before the attack, his brother told the BBC.
Meanwhile, France's interior minister said more militant attacks were likely.
"We need to understand that there have been and there will be other events such as these terrible attacks," said Gerald Darmanin. "We're at war against an ideology, Islamist ideology."
Security has been stepped up at places of worship and schools across France following two similar attacks within two weeks. Earlier this month a teacher was beheaded in a Paris suburb after showing controversial cartoons of the Prophet Muhammad to some of his pupils.
Mr Macron's subsequent defence of the right to publish the cartoons has stoked anger in several Muslim-majority countries.
Following the latest attack, police shot and wounded the suspected knifeman, who had only recently arrived in Europe. He is said to be in a critical condition in hospital.