PARIS - There was a clear failure in the psychiatric care of the radicalised extremist suffering from mental health troubles who stabbed a German tourist to death in central Paris at the weekend, France’s Interior Minister said on Dec 4.

The attack close to the Eiffel Tower has increased concerns in France over the risk of extremist attacks, particularly with the French capital now barely half a year away from hosting the 2024 summer Olympic Games.

The attacker was a Frenchman in his mid-20s born to a non-religious Iranian family but who had already done prison time for planning an attack and was known to the authorities as an Islamist radical with mental troubles.

“There was clearly a failure, not from the point of view of his monitoring by the intelligence services but a psychiatric failure,” Interior Minister Gerald Darmanin told BFM TV, adding that the attacker had an “acute mental illness”.

“Doctors said on several occasions that he was doing better, was more normal and could be free.”

Armand Rajabpour-Miyandoab, a 26-year-old French national of Iranian origin, killed a 23-year-old German-Filipino man with two blows from a hammer and four stab wounds from a knife on the evening of Dec 2 close to the Eiffel Tower.

The investigation is being handled by French anti-terror prosecutors who have launched a probe into a suspected “terrorist” plot.

France’s top anti-terror prosecutor Jean-Francois Ricard said on Dec 3 that the man’s mother had reported concerns about him as recently as October, but there was insufficient proof at the time to take legal action.

He had already been arrested in 2016 for planning an attack, eventually serving four years in prison, and had been under close watch following his release.

Mr Darmanin said the attacker’s mother had warned the police that her son was no longer taking his medication and intelligence services had offered that he should be hospitalised. But she did not want that and then reported he was doing better.

He said regional authorities currently do not have the power to issue an administrative order for such an individual to undergo psychiatric treatment and “this has to change”.

Rajabpour-Miyandoab had been radicalised through contacts on the Internet rather than meeting people at a mosque, he emphasised, adding that the attacker had also been in touch with perpetrators of similar past attacks.

These contacts included a radicalised Islamist from Russia’s northern Caucasus region – the future killer of teacher Samuel Paty, who was beheaded outside his school in 2020.

“Terrorism is changing and exploiting the weaknesses of our system,” said Mr Darmanin.

Four people – the attacker and three other people from his family and close circle were still in custody on the morning of Dec 4, a source close to anti-terrorism prosecutors told AFP.

The attack late on Dec 2 came as France was at its highest alert level amid the war between Israel and Palestinian militant group Hamas, and following the killing of a teacher in a school by a radicalised Islamist in October.

Shouting “Allahu Akbar” (God is greatest), Rajabpour-Miyandoab fled over the Bir Hakeim bridge across the River Seine after a taxi driver intervened in the attack.

Meeting a police patrol on the other side, he claimed to be wearing an explosive belt before running again, striking two passers-by – a 66-year-old British citizen and a 60-year-old French person – with the hammer.

He was finally stopped with two shots from a Taser and taken into custody.

Mr Ricard said Rajabpour-Miyandoab had posted a video on social media where he swore allegiance to the Islamic State in Iraq and Syria group and expressed his support for Islamists.

The attack has amplified security concerns over the Olympics, due to begin with an unprecedented opening ceremony on the River Seine, which experts see as a potential target for an attack.

But Sports Minister Amelie Oudea-Castera said there was no plan to scrap the idea while indicating that the river ceremony could be adapted.

“There is no Plan B, we have a Plan A within which we have several alternatives,” she told France Inter radio.