Police were called to Delacombe yesterday afternoon after locating a homemade bomb.
Victoria Police sent their bomb squad from Melbourne, fter a Ballarat City Council worker found the homemade grenade near Winter Street.
A bomb disposal robot detonated the device shortly before 8:30pm.
Police are now continuing their investigation to determine who made the homemade expolosive device.
Anyone with information is urged to contact Ballarat Police Station.