The aircraft, registration 5Y-PKI, failed to take off from Kericho Golf Club, forcing the officials to travel by road.
A court in Addis Ababa ordered his release on bail, ambassador Catherine Mwangi says in protest note.
The country's total number of cases is now 26,928, including 423 deaths and 13,495 recoveries.
“CS Kagwe needs to make up his mind whether he wants to be the boss of Afya House or Mafya,” she said.
The funding is expected to improve living conditions for at least 1.7 million Kenyans that live in Kenyan slums.