WATCH: Kyrgios last played at the Laver Cup, where he lost in singles to Stefanos Tsitsipas.

Nick Kyrgios and his girlfriend, Chiara Passari, have been ordered to do the rest of their Australian quarantine separately following the ''verbal argument'' that led to police being called to their hotel in Adelaide.

South Australian police confirmed "police were alerted to a verbal argument between two occupants" that Aussie press identified as Kyrgios and Passari. An investigation was conducted by police, though there do not appear to have been any charges.

No further details were provided. The pair were quarantining upon their return to Australia, with Kyrgios having decided to shut down his season once he finished playing Laver Cup.

"This is obviously a private issue for this particular person, regardless of their profile," said South Australia's public health officer.

In a private social media account, Passari appeared to have said that police moved Kyrgios to a different room, and shared some details of their disagreement. This is not her first public complaint about Kyrgios's behavior—the account had previously shared a screenshot of what appeared to be an insulting text message from Kyrgios.