The incident happened in Northumberland Avenue in Bury St Edmunds (Image: Google Maps)
A firework was posted through a letterbox at a property in Bury St Edmunds on bonfire night.
Police say the incident happened in Northumberland Avenue at about 9.20pm on Friday, November 5.
A spokesman for Suffolk police said: "We had a report of a firework put through a letterbox in Bury St Edmunds on Friday, November 5.
"Minor damage was caused to the inside of the letter box and the inside of the door."
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