Hersi Said, one of Yanga officials that accompanied the squad to the camp, stated that the historic Tanzanian football champions had been forced to suspend the pre-season camp in Morocco.
According to Said, they have been forced to cancel their camp schedule in Morocco for reasons beyond their control, so part of their preparations will be completed here in the country.
He said various reasons led them to make the decision but the main reason is that their eight players are required to join their respective countries' national teams for African qualifiers for the 2022 World Cup.
The Jangwani Street outfit was expected to return to the country on Friday, ready for the climax of a week of social activities that are regularly organized by the outfit, known as 'Mwananchi Week', at Benjamin Mkapa Stadium in Dar es Salaam on Sunday.
Reliable sources in Morocco say 14 Yanga players have been diagnosed with COVID-19 infection and will remain in quarantine in Morocco to comply with the disease protocols in the country.
One group of uninfected players returns today and another will return later after completing the quarantine or the infection is over.
Yanga was previously expected to return on August 27 and, later, take part in 'Mwananchi Week'.
Yanga officials have opted out of making the information known but they have been discussing it undercover.
Meanwhile, Yanga's head coach, Tunisian Mohamed Nasreddine Nabi, has asked fans and members of the club to stop putting pressure on his players.
Coach Nabi, who is currently on a trip from Morocco, said the team's members and fans should give their players time, and not compelling them to do what they want in the short term.
He said towards next season he hopes to have a strong and competitive team, despite having little time to prepare due to the late conclusion of Premier League season.
The tactician noted: "We have a lot of new players but if you look at the league it was too late to end.''
Nabi revealed: ''Preparation time has been short, soon players will go to their respective countries national teams for World Cup qualifiers."
''When they return we will have a few days before the start of the CAF Champions League preliminary round. Fans should not put pressure on the players, they should wait within 90 days, they will see something different.''
Yanga's age-old rival, Simba SC, was the country's other prominent club that traveled to Morocco for pre-season camp.
Simba SC head coach, Didier Gomes, has also lamented the absence of his players, who have earned call-ups to their respective countries national teams.
He said the absence will affect the team preparations for the coming season.
"With many of our players called for their national teams, our preparations will be affected but all in all we will continue with the preparations," he said.
While in Morocco Simba has played an international friendly tie against Morocco's FAR Rabat, which ended in a 2-2 draw.