Senator Darrell Allahar says the perpetrators of the bomb threat at the Office of the Prime Minster will be apprehended and brought to justice.
The threat was written on the mirror in a female washroom, causing the St Clair office to be evacuated, and then searched by fire officers and police.
Senator Allahar condemned the threat and promised action, saying the persons behind the action would be dealt with appropriately and to the fullest extent of the law.
He said their actions were irresponsible and would not be tolerated.
