Environment Protection Authority Victoria (EPA) has received a report of a fish death incident at Kilmore Creek, Kilmore this afternoon.
Approximately 50 dead fish have been found at the council reserve, located on the corner of White and Piper streets, Kilmore.
EPA officers will visit the site tomorrow to investigate the incident and take samples to help determine the cause of the fish deaths.
Upon EPA request, Mitchell Shire Council has placed caution signage around the affected area.