Serious crime team detectives travelled to Portugal this week and interrogated a suspect who is under arrest for an unrelated crime and was supported by the Portuguese authorities.

The suspect was identified after last week's detention of two other suspects, a 41-year-old man on suspicion of murder and another 27-year-old man on suspicion of conspiracy to kill, both of whom were released while investigations continued.

Detective Inspector Gordon Denslow said the case was a "significant development" to realize what happened on 10 July, 2018, when Gina Ingles, 34, and Milo Ingles-Bailey, four, died in a purposely set fire.

Gina's mate Toby Jarrett, 27, survived with severe burns.

Two local men, aged 47 to 23, were previously arrested on suspicion of homicide and attempted murder, but only the second remains suspect.

In the Eastbourne area there is a large Portuguese community, but British police have not confirmed to Lusa whether any of the suspects or victims have Portuguese nationality.