Almost a year since a family of four were stabbed to death in their home, Northamptonshire Police are giving an update on their investigation.
Jifeng Ding, his wife Helen Chui and their two daughters were killed in Wootton on the day of the Royal Wedding.
Anxiang Du, who detectives named as the main suspect, has still not been traced.
Four people were arrested earlier this month in connection with the deaths.
They have since been bailed.