Kiprop, 28, who is being investigated for doping, also alleged in a statement on Thursday that the two officials, who came to conduct the out of competition tests on him on November 27 previous year in Iten, might have interfered with his urine samples. "In retrospect I now clearly see the money as having a relation with the sample collected on that date".
Kiprop originally came second in the 1,500m final at the 2008 Beijing Olympics but was upgraded when Rashid Ramzi tested positive for a performance-enhancing drug and was stripped of the gold medal.
"I am innocent. I did not dope".
"It is not beyond my suspicion that my sample turned positive because I might have remitted less money than was expected to remit".
Kiprop was awarded an Olympic gold medal for Kenya in 2008 in the 1,500 meters after original victor Rashid Ramzi tested positive for a banned substance.
Kiprop acknowledged reports that he had failed a test in a statement released on Wednesday night.
Kiprop, who confirmed being investigated by the International Association of Athletics Federation's (IAAF's) Athletes Integrity Unit (AIU) said he was informed on February 3, this year that he had tested positive for a banned substance, blood boosting Erythropoietin (EPO).More news: Raptors two games down after blowout loss to Cavaliers
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"I am told EPO is put into the body using injection".
Kiprop's failed test deals another blow to Kenya's middle and long-distance running reputation. He further notes that he has not had an injection of any kind since receiving a yellow fever vaccination before a competition in the Bahamas.
Kenya has been fighting intense criticism of its anti-doping efforts after more than 40 athletes tested positive over the past five years.
Olympic marathoner Asbel Kiprop is a man now walking on a tight rope after potentially career-ending doping allegations fell on his lane. The other four are Sumgong, Rita Jeptoo, Matthew Kisorio and Agatha Jeruto. Dozens of his compatriots have tested positive for an array of banned substances in recent years.
In what would be a serious breach of regulations, Kiprop said that on November 26, 2017, he was "notified by way of telephone call from an anti-doping agent, Mr Simon Karugu "Mburu", to be available for doping test on November 27, 2017" at his "disclosed whereabouts" in Iten, Kenya.
"It is very, very odd to me after so many years of such an incredible career", Rosa told The Associated Press in a phone interview.
When contacted, Rosa Associati founder Gabriella Rosa told Nation Sport on phonefrom Italy that "he is only a businessman based in Italy and doesn't manage any athlete".