Parent wrote to authorities with concerns about activity at 'radicalised' teen's school

A worried parent told authorities she had concerns about activity at the Perth school attended by the "radicalised" teenage student shot dead after attacking a stranger at a Perth Bunnings.

In a letter sent on April 3, the mother of another student at Rossmoyne Senior High School claimed a year 11 student was using the school's prayer room to try to convert students to Islam.

The parent said she had seen screenshots of a "prayer room group chat" between students that alarmed her, WA Today reported.

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Education Minister Tony Buti earlier this week tried to distance the "radicalised" teen from the parent's letter, saying the author had raised concerns about a boy called "Mohammed", which is not the slain teen's name.

The letter included a reference to the children watching videos of Zakir Naik, a controversial figure who has been accused by Indian authorities of spreading Islamic extremism.

"Messages contained information about conversion to Islamic religion inducing fear to world end, targeting other students for conversion," the parent wrote.

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"[My child] disclosed in the prayer room students are encouraged to watch videos of Zakir Naik. He was told not to inform parents, and he should hide it."

The parent said she was "worried" for the safety of her child and her family.

Debate has continued for days after the incident about how the Caucasian teenager, who police said had been "radicalised", was dealt with and monitored before the attack.

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It was earlier revealed he had been given access to his school's prayer rooms without direct supervision, despite parents raising concerns about what was going on inside.

The teen had been part of a government-funded de-radicalisation program since he was 14.

He was enrolled after an incident at the school where he threw a science experiment – a small explosive – into a toilet block.

Premier Roger Cook said the boy's offending was in the context of complex needs and mental health issues.

The man who was stabbed says he is "coming to terms" with his injuries, as he recovers in hospital.