Worcester arson victim Andrew Heath ran 'loan' service
A man killed in a deliberate fire at his flat in Worcester ran an unofficial "loan" service, police have said.
Convicted paedophile Andrew Heath, 52, was found dead at his flat in Warndon on 14 December.
Police said his loan service, in which he bought items on behalf of other people which put him into debt, was one of "many lines of inquiry".
A website set up by police to mark six months since Mr Heath's death features previously unseen CCTV footage.
The footage shows the 52-year-old visiting his local Spar Shop on Cranham Drive earlier before he was killed.
An inquest heard Mr Heath died as a result of smoke inhalation after a wheelie bin was set on fire outside his front door in Chedworth Close.
His sister, Leia Charleson, said: "We will gain no closure until we know who is responsible and the reasons why they set his flat on fire."
Mr Heath had been jailed in 1984, 1989 and 1992 for gross indecency and indecent assault in Leicester and Birmingham.
West Mercia Police said his last conviction was in 1999 when he was given three years probation for indecent assault.
Police said they had no records of any offences or complaints against Mr Heath since he moved to Worcester and they had "uncovered no animosity" towards him.
Ten people have been arrested in connection with the investigation. So far seven of them have been released on bail and three have been released without charge.
Police are offering a £20,000 reward for information that results in finding Mr Heath's killer.