The Warrnambool branch of the NAB is closed after a physical security threat.
A sign on the door states it is closed after a statewide shutdown.
Branches across the state have been evacuated and closed.
"Unfortunately we have had to close our branches temporarily due to a physical security threat," a post on the bank's Facebook page states.
"As always the safety and security of our customers and colleagues is our priority.
"We are working closely with police and will provide an update as soon as we can.
"Digital banking services including Internet and Mobile Banking and telephone banking are available."
More to come