An attacker with a knife injured children and others in a town in the Alps on Thursday before he was quickly arrested, France’s interior minister said.

Gerald Darmanin said the attack took place in a square in the town of Annecy. In a short tweet, he said police have detained the attacker.

“Several people including children have been injured by an individual armed with a knife in a square in Annecy,” he tweeted.

A local lawmaker, Antoine Armand, tweeted that children were attacked on a playground. He called the attack “abominable.”