In June 2021, Friendlyjordies producer Kristo Langker was arrested by officers from the Fixated Persons Unit and charged with two counts of stalking and intimidating Barilaro after Langker had approached Barilaro at a National Party event with Shanks and on another occasion. Langker's lawyer Mark Davis contested the police's accounts, and he denounced the timing of the arrest being soon after the defamation lawsuit commenced. He also criticised use of the Fixated Persons Unit, a counter-terrorism unit set up in the wake of the Lindt Cafe siege. In August 2021, it was revealed that Barilaro had been in contact with the Fixated Persons Unit regarding Shanks for at least six months prior to Langker's arrest.