A team of 60 police officers are working to find those responsible for an arson attack which killed six children in Allenton in Derby two weeks ago.
Jade Philpott, 10, and brothers John, nine, Jack, seven, Jessie, six, and five-year-old Jayden breathed in smoke when fire ripped through their home.
Their 13-year-old brother Duwayne died several days later in the Birmingham Children's Hospital.
Their parents, Mick and Mairead Philpott say they have been overwhelmed by the support of the community and those involved in the investigation.
Derbyshire Police are continuing to carry out forensic examinations at the scene at Victory Road and a minibus and a caravan have been taken to a nearby garage for further examinations to take place.
The police say they are keeping an open mind as to the reasons for the fire being set.
Anyone with information should contact the police on 101 or Crimestoppers anonymously on 0800 555 111