Djokovic's own deportation has been delayed until at least Monday after he went to court to overturn the decision to throw him out of the country.
Lawyers for the world No 1 secured an interim injunction preventing him being ejected ahead of a hearing on Monday.
Djokovic had flown to Melbourne after gleefully announcing on Wednesday he had been granted a medical exemption from having to be vaccinated against coronavirus to play at the first grand slam of the year.
But triumph turned to disaster for the vaccine sceptic after he was detained for nine hours amid claims he had sought to gain entry to Australia using invalid documents before being told he would be deported.
In what has become a major diplomatic incident, Djokovic took immediate steps to overturn the decision and, at a hearing on Thursday, the Federal Circuit Court ordered it be put on hold.
A failure to win his legal battle could see Djokovic banned from Australia for three years, a punishment that can be imposed on those whose visas are cancelled.
Australian Home Affairs Minister Karen Andrews confirmed on Thursday that the ABF was investigating other players.
"I'm aware of those allegations, and I can assure you that the Australian Border Force is investigating that now," she told 2GB.
Tennis Australia has been approached for comment on the reports of Voracova's detention.