Bangladesh Emerging Women's team hosted a 5-match one-day series against the South Africa Emerging team in Sylhet.
They had already sealed the series after winning all four out of four matches before the series was cut short by one game after the visitors decided to leave the country on April 12 before a stricter lockdown is enforced from April 14, which was their scheduled departure date.
The South African team were scheduled to leave Bangladesh on Monday night as they shortened their tour.
All the members of the team took Covid tests at the MAG Osmani Medical College on Monday before flying where five of them -- four players and the manager -- tested positive, despite being in the bio-bubble throughout the series.
According to reports, the four players who tested positive are Sinalo Jafta, Leah Jones, Nobulumko Baneti, Robyn Searle and Team manager Marsia Letsoalo.
They are now in isolation at the hotel.
The five individuals will stay back in Bangladesh for recovery as the rest of the team departed for South Africa on Tuesday morning.
Bangladesh Cricket Board (BCB) physician Manzur Hossain told the media that there is no reason for the covid results to be positive as they were in the bio-bubble throughout the series.
"They were in the bio-secure bubble here. We even tested them after every three days. They will be tested again today (Tuesday). Whether it is negative or positive, we will take the next decision based on the results," Manzur said.