The father of the Streatham terrorist has claimed he told his son “not to be naughty” during a phone call on the day before the attack.

Faraz Khan said he was not aware that Sudesh Amman – who was shot dead by police after stabbing two people in south London on Sunday – had been radicalised.

“He never talked to me about things like that,” he told Sky News.

“He said when his mother came to see him she brought him food – that’s the kind of things he talked about,” Mr Khan said.

“I told him not to be naughty, be good, and he listened.”

Streatham attack: Man shot dead by police after stabbings Show all 22 1 /22 Streatham attack: Man shot dead by police after stabbings Streatham attack: Man shot dead by police after stabbings Armed police officers on Streatham High Road. The Metropolitan Police warned people to stay away from the Streatham area boguta37/PA Streatham attack: Man shot dead by police after stabbings The man was shot dead by police after two stabbed in 'Islamist-related' terror attack in London boguta37/PA Streatham attack: Man shot dead by police after stabbings Sudesh Amman, the attacker, has been named as a convicted terror offender who was released from prison days ago Metropolitan Police/PA Streatham attack: Man shot dead by police after stabbings Items left on the pavement at the scene in Streatham High Road Isis supporter Amman was just 18 when he was jailed in December 2018 after police found a stash of bomb-making manuals and other propaganda. Now 20, he had declared his own wish to carry out a terror attack and stockpiled a combat knife, air gun and black flag at his family home in London PA Streatham attack: Man shot dead by police after stabbings He was being monitored by undercover police and being followed as part of a “proactive counterterrorism operation” when he started the rampage in Streatham AP Streatham attack: Man shot dead by police after stabbings Amman was able to stab two people before being shot dead by armed officers outside a busy row of shops Gabriel Video/PA Streatham attack: Man shot dead by police after stabbings A woman reacts as police officers interview people near to the scene Getty Streatham attack: Man shot dead by police after stabbings An armed police officer on Streatham High Road Deputy Assistant Commissioner Lucy D’Orsi said Amman was wearing a fake suicide ves Gully/PA Streatham attack: Man shot dead by police after stabbings Police forensic officers work outside of a Boots store AFP via Getty Streatham attack: Man shot dead by police after stabbings Police officers at the scene Getty Streatham attack: Man shot dead by police after stabbings A police forensic officer works at the scene in Streatham High Road PA Streatham attack: Man shot dead by police after stabbings Items left on the pavement at the scene in Streatham High Road PA Streatham attack: Man shot dead by police after stabbings A police officer on the scene Dave Chawner/SWNS Streatham attack: Man shot dead by police after stabbings Police forensic officers are seen near the site Reuters Streatham attack: Man shot dead by police after stabbings Police officers on the scene outside an Iceland supermarket Andy Bullemor/SWNS Streatham attack: Man shot dead by police after stabbings Police are seen near a site where a man was shot Reuters Streatham attack: Man shot dead by police after stabbings A policeman secures the site of the incident EPA Streatham attack: Man shot dead by police after stabbings A view of the scene Megan Tobeck Streatham attack: Man shot dead by police after stabbings Armed police at the scene in Streatham High Road PA Streatham attack: Man shot dead by police after stabbings A view of the scene Michael Owens Streatham attack: Man shot dead by police after stabbings Police forensic officers at the scene PA Streatham attack: Man shot dead by police after stabbings A Police officer is seen near a site where a man was shot Reuters

Amman, a 20-year-old Isis supporter, had been released from prison days before he stabbed people in Streatham and was under police surveillance at the time of the attack.

He was jailed for possessing and sharing terrorist documents in December 2018.

“He would never talk to me about naughty things,” Mr Khan said. “I heard they found a lot of things and I saw them on the news, but I never thought he would go this far.”

His mother, Haleema Faraz Khan, also told Sky News that her son was a “nice, polite boy” and that she believed he had become more religious while serving time in prison.

Two people were stabbed during the weekend attack, while another person was injured by flying glass in the following gunfire.