- Mr Nagy pointed to "some real significant movement on the part of the government recently".
- He, however, did not cite specific actions taken by Kenyan officials.
The United States is encouraged by Kenya's efforts to reduce corruption, the top US diplomat for Africa said on Thursday after holding talks the previous day with President Uhuru Kenyatta.
"We discussed, on an ongoing basis, the whole issue of graft and corruption," Assistant Secretary of State for Africa, Tibor Nagy, said in a press briefing.
Mr Nagy pointed to "some real significant movement on the part of the government recently".
He, however, did not cite specific actions taken by Kenyan officials.
The official also did not answer a reporter's question on whether the US will seek to extradite Kenyans alleged to have taken bribes from the Akasha brothers.
Assistant Secretary Nagy said he had no comment on the Akashas' bribery confession, noting that their case is the subject of "an ongoing investigation involving multiple US government agencies".
Baktash and Ibrahim Akasha, the heads of a global drug-trafficking ring, pleaded guilty recently in a US court to several felony charges, including obstruction of justice involving pay-offs to police, prosecutors and judges in Kenya.
Kirsten Madison, the Assistant Secretary of State for International Narcotics and Law Enforcement Affairs, earlier decried lack of accountability for corrupt activities within Kenya's criminal justice system.
She spoke in general terms regarding US efforts to help fight corruption in Kenya, which, she said, greatly impedes the fight against drug trafficking.