NAIROBI, Aug. 31 (Xinhua) -- Pressure is mounting on Athletics Kenya officials to answer to charges on how 36 locals were cleared to compete for other nations at the Rio Olympics.

This comes as Kenya's Olympic committee officials are facing questions from the country's Criminal Investigation department of the police on their role in the scam.

Two-time Boston Marathon winner, Moses Tanui, in an interview in Nairobi said anyone moving abroad to compete for a different country must get clearance from AK.

However, if there is any objection, then they have to wait for three years for them to compete. However, with 36 runners cleared in Rio, Tanui believes somebody is cashing in on the desperate athletes and exploiting them.

"It is happening at an alarming rate. Somebody somewhere is signing them out without any consideration. There are many more unknown stars in Kenya who could end up surprising us in other national colors if we don't take control of what I call 'human trafficking'," he said.

Ruth Jebet of Bahrain raised a storm when she won gold for her adopted country in Rio Olympics in the women 3,000m steeplechase race.

There is also Eunice Kirwa, who won the women marathon silver for Bahrain at Rio 2016 while Paul Kipkemoi Chelimo took the men 5000m silver for the USA.