POLICE are continuing to investigate two suspicious fires that occurred within 24 hours of each other in Dalby last week.

No charges have been laid in relation to the fires but police are keen to talk to anyone who has information about the blazes that destroyed two public structures and shocked the community last week.

Police also said a number of minor fires that had occured around town since the arson attacks were not related.

However they are urging people to report any suspicious activity immediately.

This comes after a sports club house on Bligh Street was destroyed by fire about 3.50am last Tuesday.

The building which had previously been used by soccer and cricket clubs, was the home of the St John's Indoor Bowls group, which lost all its memorabilia in the blaze. Despite children being seen in the vicinity of the Bligh St sports clubhouse on Monday night, police were unable to comment on whether juveniles were responsible, or involved, in the arson attacks.

Then, shortly before midnight on Tuesday night emergency services were called to the Bunya Park Racecourse.

Captain Peter Mauch said it took 12 firefighters almost an hour to control a blaze that destroyed the historic grandstand.

Any information regarding either of the fires should be reported to Crime Stoppers on 1800333000.