Police have launched an arson probe after a lit firework was posted through the letterbox of a home. Officers and firefighters attended a property in Eythorne, Dover, after receiving calls about a suspected arson attack. An investigation is ongoing and an image has been released of a man who may be able to assist officers with their inquiries. A police spokesperson said: “We were called at about 6.15am on Wednesday, January 3 to a report that a lit firework had been posted through the letterbox of a property in Adelaide Road. “Officers attended along with the fire service, who ensured the resi…