A person has been arrested on suspicion of murder after a quarreling stab in a business in South-East London.
Two people aged 58 and 27 were killed and to the hospital on a long lane in Barmondi at around 13:00 BST on one and two Mondays.
A third person, in his 30s, who was detained in connection with the incident, is in a hospital in a life-threatening position, and a fourth person is also in the hospital in the 30s. Their injuries are not considered a threat to life.
The victims are believed to be known for each other, the metropolitan police said.
