Sanctioning fees had already been paid to the WBA, IBF and IBO bodies which were to be involved in the tournament because boxers were to contests their titles.
Jonas Sultan from the Philippines, who was to face Ricardo Malajika for the vacant IBO Intercontinental junior-bantamweight belt in the main bout, arrived in the country on Sunday morning. He is staying at Emperors Palace.
Jabulani Makhense was to defend both his WBA Pan African and IBF Afriac junior-welterweight titles against Namibian Harry Simon Junior while Boyd Allen's WBA Pan African junior-middleweight strap was to be on the line against Brandon Thysse.
"We are making sure that Sultan flies back home," said Ellis, who added that "more than likely our upcoming tournament for May will be cancelled.
"Everybody must be safe."