PARIS (AP) — A French judicial official says the young man who stabbed people in a lively Paris neighborhood didn’t have an arrest record but was on a watch list for potential radicalism.

The official said the parents of the alleged attacker, a 20-year-old French citizen who was born in the Russian republic of Chechnya, were still being questioned on Sunday.

They were detained at their residence in Paris’ northern 18th district after police shot and killed the suspect in Saturday night’s attack.

The judicial official wasn’t authorized to speak publicly and asked not to be named.

One person was killed and four others wounded in the knifing rampage near the Paris Garnier Opera house. The Islamic State group claimed responsibility.

Chechen President Ramzan Kadyrov identified the suspect as Khasan Azimov.

— by Elaine Ganley in Paris.