The purported bulletin was published in this Facebook post on June 25, 2020. It has been shared more than 7,000 times.
The post was shared in a Facebook group about Cranbourne, a suburb of Melbourne in the Australian state of Victoria.
Also Read: Disgraced US Researcher Makes Numerous False Claims About Vaccines
The Facebook post's caption states in part: "Police Bulletin / Warning!!!
"People are going door to door handing out masks, they say it's a new initiative from local government.
"They will always ask you to please put it on to see if it fits you. It has been doused with chemicals which knocks you out cold and once you're knocked out they proceed to rob you."
A similar claim was also shared by other Victoria-based users on Facebook here, here and here.
The claim is false.
In a July 1 email to AFP, a Victoria Police spokesperson said : "Victoria Police did not issue this bulletin, however is aware that it has been widely circulating on social media sites for a number of months. Victoria Police is unaware of any instances of this nature occurring in Victoria."
The fake "police bulletin" also circulated on social media in other countries, including Ethiopia, India here and here, Singapore, the UK and Uganda, citing authorities.
The same claim was debunked by AFP Fact Check here after it circulated in South Africa.
Also Read: Outdated Mask Information Issued By WHO Expert Goes Viral
A keyword search on Facebook found a statement from the Singapore Police Force debunking the false claim after it circulated in Singapore. The statement was published here on April 3, 2020.
The statement, which included an image showing an identical message stamped with the red text "FALSE MESSAGE", states in part: "There are false text and audio messages circulating via text messaging services, claiming that there are people robbing residents under the pretext of distributing masks, purportedly under a new government initiative.
"This is untrue. The Police have not received any report regarding such incidents."