The Dings are thought to have been stabbed to death on the day of the royal wedding Police investigating the murders of a family of four in Northampton have found the Vauxhall Corsa missing from their home.
Lecturer Jifeng Ding, his wife Helen and their two daughters Alice, 12, and Xing, 18, were found stabbed to death in Pioneer Close in Wootton on 1 May.
Businessman Anxiang Du, 52, is wanted in connection with their murders.
Police said the car was found in north-west London following a call from a member of the public.
Mr Du, who lived in Coventry and worked at a herbal medicine shop in Birmingham, travelled to Northampton by train just a day after losing what has been described as a bitter court battle over his shared business interests with the Ding family.
He was reported missing by his own family on Friday after they discovered a note “saying goodbye” at the shop where he worked.
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