Matasi appeared to agree to a deal to influence the result of a league game in an undated video that was posted online, but the BBC was unable to confirm it. "I have spoken to him. He was also shocked at what he was seeing in the video and he told me he doesn't know about match-fixing," Homeboyz owner Cleophas Shimanyula told BBC Sport Africa
"We are dedicated to protecting the integrity of our competitions and reaffirm our zero-tolerance policy on match manipulation," the statement continued.
"FKF's anti-match manipulation rules and FIFA principles will be followed throughout this investigation, guaranteeing a fair, open, and exhaustive procedure.
"Adequate action will be taken based on the findings, and the player's and his club's rights will be respected."
Matasi has been approached by BBC Sport Africa for a statement.
Shimanyula supported Matasi, citing the veteran's three consecutive clean sheets since joining the team a month ago.
"We discovered that Matasi has not harmed the club after watching this video," he stated.
"We cannot believe everything in a video because there may be misunderstandings and misleading narratives.
"He will continue to play for us since, in our opinion, he has done nothing wrong, unless there is proof or the FKF contacts us to express suspicions about the player's actions.
"We won't do anything until he is proven guilty."
Shimanyula also issued a challenge to the Kenyan football community to present evidence against Matasi, saying, "Kakamega Homeboyz is against any form of match manipulation." "In the past we've reported match-fixing regarding some of our players who fixed a game with the coach and punishments were handed down by Fifa," he said, adding, "We have our own internal systems that we use to also look at match-fixing and I cannot speak on behalf of other clubs.".