The mother of a man suspected of stabbing a German tourist to death near the Eiffel Tower in Paris reported concerns about her son weeks before the attack, a prosecutor has said.
Two others, including a British man, were injured in the attack on Saturday.
A 26-year-old French man was later arrested, and anti-terrorism prosecutors opened an investigation.
France’s interior minister said there was a “failure” in the alleged attacker’s psychiatric treatment.
