The 2 males who had been stabbed at a enterprise facility in central London had been father and son, police say.
Terry Macmillan, 58, from Chislhurst, Bromley, was declared useless on the scene, and 27-year-old Brendan Macmillan died in hospital.
Three different males had been taken to the hospital.
The assault was on the Longrain property, Southwark East and West Highway, on Monday round 1pm, resulting in the Borough Station.
The 31-year-old man was arrested on suspicion of homicide. Police say he stays within the hospital and his situation isn’t life-threatening.
Eltham-based Previous Corfean Rugby Membership has been known as “a member of our household” with Brendan McMillan and mentioned his father was “a longtime supporter and sponsor of the membership.”
Brendan was known as “one of many kindest, humorous, and most genuine individuals,” who mentioned, “smile perpetually, at all times making jokes, at all times vigorous.”
In response to the McMillan Household Belief, Terry MacMillan based an actual property and funding firm in 1998.
A police assertion on Tuesday added: “The incident came about in a enterprise facility and the crime scene is in place at a close-by lodge the place the arrested man is inside.
“We all know the hypothesis that the person was staying on the lodge, however that is not the case.”