A second person has been arrested in connection with a caravan fire in the back garden of a property on Monday.
Emergency services were called to Bell Hill Road in St George, Bristol, at approximately 22.25 BST.
Avon and Somerset Police said a man in his 60s was arrested on suspicion of committing arson with intent to danger life on Wednesday morning, and has since been bailed.
This followed the arrest of a man in his 50s on suspicion of the same charge on Tuesday morning. He has also been bailed.