A £10,000 reward is being offered for information on an Essex house fire that killed a mother and her five children.
The blaze killed Sabah Usmani, her daughters Hira and Maheen and her sons Sohaib, Muneeb and Rayyan in Harlow last month.
Police are keen for information on a group of young men seen outside the house on the night of the fire.
More top news
Eyewitnesses report hearing the engine on Ford's vintage aircraft spluttering before cutting out approximately 500 feet above the ground.
Police are investigating whether a Land Rover Defender found burnt out in West Horsley was involved in Tuesday night's ram raid.
The work, called Gift Horse, replaces the giant blue cockerel that previously sat on the plinth.