The PCB decided to adopt a safety-first approach soon after the official tested positive and asked its employees to work from home.
PSL 2021: Quetta Gladiators batsman Tom Banton among two foreign players to test positive for COVID-19
Pakistan Cricket Board's Director of Media Sami Burney had announced on Tuesday that two foreign players and one member of the support staff had tested positive for the virus. This was after Australian leg-spinner Fawad Ahmed tested positive on Monday.
Islamabad United player Ahmed's positive result on Monday led to the postponement of their match against Quetta Gladiators.
Many reports in the Pakistan media blamed PCB for the positive test incident which has cast a shadow on the league.
The Pakistan Cricket Board (PCB) said all remaining members of Islamabad United have tested negative.
Former Federal Minister for Immigration Brendan O'Connor made the announcement within a fortnight of the Australian Senate passing legislation to fast-track citizenship in special cases.