UPDATE
CFA and MFB crews have a fire at Sandown Racecourse under control.
A CFA crew responded to an alarm at the Springvale facility shortly after 11.30am, reported a structure fire and called for backup.
A CFA spokeswoman said information indicated the fire was in the grandstand but that this had not been confirmed.
The flames engulfed an area about 30 metres by 20 metres.
Nine fire trucks remain at the scene, including the Dandenong ladder platform vehicle and four MFB trucks.
***
THE CFA is responding to a structure fire in offices at Sandown Racecourse.
A crew responded to an alarm shortly after 11.30am, reported a structure fire and called for back-up.
More as it comes to hand.