(BBC) Britain’s most senior police officer has said the Streatham attacker was able to stab people despite being under surveillance because such operations are not “man-to-man marking.”
Met Police commissioner Cressida Dick told a committee that Sudesh Amman was under “covert” police surveillance.
Amman, 20, was shot dead by police after stabbing a teacher, 51, and a man in his 40s in south London on Sunday.
Dame Cressida said it was “clearly not possible” to stop every attack.
Amman had been released from prison on 23 January after serving half of his sentence for terror offences.
