Australia has opted not to prosecute actress Amber Heard over allegations she lied about importing her dogs Pistol and Boo into the country in 2015.
Heard was charged at the time with breaking quarantine laws and ultimately pleaded guilty to falsifying an immigration customs card.
Two charges of illegal importation were dropped.
She escaped conviction in a Gold Coast court and was handed a $1000 one-month good behaviour bond in 2016.
The incident made international headlines when then-Agriculture Minister Barnaby Joyce threatened to have the dogs euthanised if they didn't "bugger off" back to the US.
Depp and Heard later released an apology video.
However, the case was resurrected during Depp's 2020 libel case against tabloid The Sun in the UK, when it was alleged in court Heard had lied about being unaware of the quarantine requirements.
However, in a statement today, the department said no prosecution action would be undertaken.
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"The department collaborated with agencies, both in Australia and overseas, to investigate these claims against Ms Heard," the statement read.
"A brief of evidence was referred to the Commonwealth Director of Public Prosecutions, who has made the decision not to prosecute in this instance having applied the Prosecution Policy of the Commonwealth."