Kenya has about 720,000 refugees in Kakuma and Dadaab.
The country has vowed to reinforce its diplomatic ties with Kenya.
The two priests were murdered in a span of two weeks.
The man claimed to have been mentally unstable.
On Friday, the county government suspended beach activities, following a strong winds warning by Kenya Met.
The suspects were arrested in Kitale town.
KRA says only 2.4 million Kenyans have managed to successfully file their returns.
The clarification comes against the backdrop of the ongoing hearing of Gachagua's impeachment case.
The president had pardoned other inmates barely a month ago.
Priest Alloyce Cheruiyot Bett was shot dead after a sermon on May 22.