In a disturbing incident at East Street market in Walworth, south London, a vendor witnessed the fatal stabbing of a customer during a busy morning. Adam Kadirzadah described how the attacker approached shoppers from behind, brandishing a large knife. One man was killed, while another man and woman were hospitalized with unknown conditions. A suspect, believed to be in his 60s, was arrested at the scene. Authorities are investigating the incident, while local residents express their shock and concern over the violence that unfolded in their community.