"They had conducted unnecessary activities" on December 25 and 27, when they were supposed to be under home quarantine after returning to Hong Kong, the statement said. "They were both subsequently tested positive for Covid-19 Omicron variant, and have been discharged from hospital upon completion of treatment," it added. The two — who were fired after the quarantine breach — face up to six months in prison and a $640 fine. Hong Kong leader Carrie Lam said last week that authorities were investigating whether Cathay Pacific has complied with regulations, and could face legal action. In the onslaught of criticism, chairman Patrick Healy defended his airline, arguing that a "tiny minority" of rule-breakers should not overshadow Cathay Pacific's contributions to Hong Kong.