Australian Foreign Minster Alexander Downer's parliamentary office was closed Friday, after receiving a package containing white powder.
Mr. Downer was not in the office. He has been on an official visit to India this week.
The security scare comes just a day after five embassies, the Department of Prime Minister and Cabinet and the loading dock of Parliament House were closed after receiving suspicious packages.
The packages discovered at the U.S., British, Japanese, Italian and South Korean missions in Canberra were all found to be harmless.
The loading dock at Parliament House and the Indonesian embassy have been shut down twice in the last week after receiving similar packages.
They came amid a backlash against Indonesia's jailing of an Australian woman on drug smuggling charges.
Some information for this report provided by AP, AFP and Reuters.