10:51 EDT, 14 December 2020 18 shares Police investigated 'reports of an argument' at the home of a retired Swedish academic seven hours before she was found dead in a suspected arson attack, it emerged today. Vera Croghan, 89, was found dead just before 7am on Friday by firefighters called to a blaze at her £750,000 semi-detached home in Unthank Road, Norwich, Norfolk. A male teenager who was known to her was later arrested and taken to the Police Investigation Centre at Wymondham near Norwich. He has now been detained under the Mental Health Act and 'remains under investigation' while police carry out further inquiries into Mrs Croghan's death.