CCTV footage has captured the moment a 'murdered' ice cream seller was seen arguing intensely just seconds before he was stabbed to death.

The Metropolitan Police has launched a murder investigation and said officers were called to reports of a stabbing in Monks Park, Wembley, at around 6.10pm on Tuesday.

Man and woman held in custody over killing of Shazad Khan, 41, as police teams search scene

Shazad Khan was pronounced dead at the scene on Tuesday evening

Zaher Zaarour, 26, charged after Shazad Khan was stabbed to death in north-west London