Essex Police have released a new video as part of a fresh appeal for information following the death of six family members in a house fire in Harlow.
Dr Abdul Shakoor, who lost his wife and five children in the blaze in October 2012, made an emotional appeal on the BBC's Crimewatch last night.
The emergency call made by Dr Shakoor to the emergency services has also been released by police.
Dr Sabah Usmani and her children, Hira, 12, Sohaib, 11, Muneed, nine, Rayyan, six, and three-year-old Maheen all died when the blaze ripped through their home.
Essex Police say they have already received at least 25 calls following the BBC's Crimewatch appeal last night.
Police have released new images of the burnt-out house where a mother and her five children were killed in a fire in Essex.
It's thought the blaze at their home in Harlow in October last year was started by burglars.
The full story now from Tom Barton.
Essex Police say they are following up several new leads after a father, whose family was killed in a house fire in Harlow, made another emotional plea to help find those responsible.
Doctor Abdul Shakoor - who lost his wife and five children in the fire in October last year - appeared on the BBC's Crimewatch programme, which also featured new home footage of the family.
Police have released new images of the damage done by a house fire that killed six members of the same family.
They are also releasing a new video of the scene around the time the fire started, to try and get witnesses to come forward.
Police investigating a house fire in Harlow which killed six members of the same family have made a fresh appeal on the BBC's Crimewatch programme. It featured an interview with Dr Abdul Shakoor, who lost his wife and five children in the blaze last year.
The appeal also featured previously unseen footage from the night of the fire, which was recorded by the emergency services.