Ruto said this while receiving the UEFA Champions League trophy.
The senator confirmed that she was in London.
"This is in line with our core values and response to genuine requests," the government stated.
This is not the first time a Kenyan journalist is arrested over a controversial news piece.
The MP was gunned down by unknown assailants on Wednesday, April 30 at City Mortuary roundabout.
Prime time is packed with headlines - but how much did you grasp? Take our quiz to find out how well you followed this week's biggest stories.
The nullification followed a petition filed challenging the appointments.
U.S. federal agencies said this will help in reducing what they are calling "wasteful" spending.
The changes come at a time when different appointments are being witnessed in government.
CS Murkomen has since expressed the government's commitment to crack down on the attackers.