On Monday, an arrest petition was submitted regarding a man in his 20s who was arrested at the end of September on suspicion of arson in the southern county.
The petition states that the prosecutor wants to detain the man again, on probable cause on suspicion of several crimes.
The new crimes concern suspicion of another arson and suspicion of murder.
The murder must have taken place between sometime between 15 June and 24 September.
In the same case, a man in his 50s is in custody, suspected of murder.