This is because needles were found in their room at the Commonwealth Games village on the Gold Coast in Australia - and there is a strict "No Needles" policy.
Head of Cameroon's Commonwealth Games Team, Victor Agbor Nso in a statement explained that despite that the athletes were being closely monitored, three Cameroonian competitors were able to sneak away from the Games village on Sunday night.
"These athletes, three weight lifters and five boxers, were part of a team that had a training camp in Warwick before getting to Gold Coast".
Last year, a member of the Rwandan para-taekwondo team, Eliezer Tuyishime, went missing from the 2017 para-taekwondo championship village in London, UK and did not return home after the competition.
Two of the athletes were yet to compete.
"Although they have valid visas until mid-May. we are concerned because they haven't turned up for events when they are the reason they are here, " he told Macquarie Media radio on Thursday.
Two Indian athletes were kicked out of the Commonwealth Games on Friday after syringes were found in their accommodation, a breach of tournament rules. Seven of them were from Cameroon.
With India already crossing their Gold medal tally of the 2014 Glasgow games, fans can certainly be excited heading into the final two days of the games.
"The Australian government is working closely with the organising committee and worldwide stakeholders to ensure that Commonwealth Games officials and athletes are aware of their visa responsibilities, " the ABF said in a statement on Thursday.
Home to 200 different linguistic groups, French Cameroon gained independence from France in 1960 as the Republic of Cameroon.
"I would simply say enjoy Australia while you are here, this includes Cameroon and any other athletes, stay within the law and be mindful of the fact that there is a system in place in this country", Beattie told a news conference on Wednesday.
"I don't want to be too blase about it but there are mechanisms to deal with it and it will be dealt with in the right way by that department".
"We have a service to people who have legitimate visas to be in this country", he added.