The family of a mother and her son, killed in a deliberate house fire in Eastbourne, are appealing for information, one year since their deaths.
Gina Ingles, 34, and four-year-old Milo Ingles-Bailey died in the blaze on Croxden Way in the early hours of July 10 last year.
Gina's partner, Toby Jarrett, 27, was also in the house when the fire took hold, but managed to escape through a first floor window.
He suffered serious burns.
Detectives are still hunting for the arsonist who caused the blaze.
Detective Chief Inspector Mike Ashcroft, who is leading the investigation, says the force is "extremely grateful" to the local community for their "continued support and co-operation.
He added: "We remain just as determined now as we were in July 2018 to locate the person, or people, responsible for this horrific offence and bring them to justice. This deliberate criminal act claimed the lives of a mother and her young son, and has severely affected the life of another man. We are certain that someone, somewhere, knows what happened that terrible morning, and why.”
Two local men, aged 47 and 23, were arrested on suspicion of two counts of murder and one of attempted murder.
The 23-year-old remains released under investigation pending further enquiries and the 47-year-old was released without charge and will face no further action.