Police are investigating after a letter box was destroyed by explosives at Hamilton North early Tuesday morning.
Just before 5am Tuesday, police attended Boreas Road, following reports of an explosion heard in the area.
Police canvassed the area and located a damaged letterbox.
No one was injured, and no other property was damaged.
A crime scene was established and has been forensically examined.
Newcastle City Police District have commenced an investigation and are appealing for anyone who noticed any suspicious activity in Boreas Street to contact Crime Stoppers on 1800 333 000.