Police have charged a man after an alleged suspicious fire in Williamstown last week.
It is alleged the man lit a pile of rubbish on fire at a tennis club on Melbourne Road about 2.50am on January 24.
Investigators believe the fire spread to nearby grass, before spreading to a portable structure and causing considerable damage.
There were no injuries.
Detectives executed a search warrant at a Williamstown property, where a 41-year-old Williamstown man was charged with criminal damage by fire (arson) and committing an indictable offence on bail.
He will appear at court on Wednesday, January 31.