Police from Melbourne's Bomb Response Unit will soon detonate a quantity of explosives found in a Mooroopna backyard.
Police are warning residents that a loud bang is likely to be heard across Mooroopna, and that triple zero should only be called in the event of an emergency.
The explosive substance was examined by police and determined too unstable to move and needed to be detonated at the property.
Electricity has been cut to parts of the street and up to 25 homes within the immediate vicinity have been evacuated.
Shepparton police Senior Sergeant Brad Fisher said police were currently waiting on equipment and sandbags to dispose of the chemicals.
"We've put everything in place that we can to ensure the safety of first and foremost the members who are working around here, and secondly the members of the public," Snr Sgt Fisher said.
"And that’s why we’ve done the evacuations, so if anything were to go wrong then we’ve got our bases covered to make sure no one gets hurt."
Residents are urged to avoid the area.
Police say a warrant was executed at the address in relation to a drug investigation.
A quantity of what is believed to be explosives has been located.
A Mooroopna man, 33, is currently in police custody.
Police from Melbourne's Bomb Response Unit are headed for Mooroopna to investigate a suspicious package at a William St address.
Local police have cordoned off a section of road at William St, at the intersection of Hall St, and are redirecting traffic.
People are advised to avoid the area.
More to come.