Detectives in Kenya are questioning staff from the Deputy President William Ruto’s office as part of an investigation into a fraudulent military arms deal worth nearly $400m (£300m).
In a court in the capital Nairobi a former sports minister, Rashid Echesa, has denied committing fraud.
He is accused of trying to obtain the money from some Polish businessmen after promising them they would get a tender to supply military equipment to the Kenyan military.
Police say Mr Echesa had already received more than $100,000.
Mr Ruto has also denied any involvement in the scandal.