Police were called at 3.10pm on Saturday, 5 June to concerns for the welfare of a woman at a residential property in Barton Close, Bexleyheath.
Officers attended along with London Ambulance Service. An 89-year-old woman was pronounced dead at the scene. Her next of kin has been informed.
A post-mortem examination will be scheduled in due course.
A 57-year-old man was arrested at the scene on suspicion of murder. He was taken to the hospital as a precaution for treatment to self-inflicted injuries.
The suspect and deceased are believed to be known to each other.
Detectives from the Met’s Specialist Crime Command (Homicide) have been informed and a crime scene remains in