Elgeyo Marakwet senator Kipchumba Murkomen has been put on the spot, for allegedly belittling some Rift Valley leaders.
Kapseret MP Oscar Sudi and his Nandi Hills counterpart Alfred Keter accused the senator of portraying them as betrayers before Deputy President William Ruto.
They said Murkomen was doing so after two of them once opposed Ruto, after corruption scandals escalated in the Jubilee government.
''We want to tell Murkomen to stop his 'childish' behavior. He has been betraying us to the Deputy President, with intentions that the DP rejects us as his Rift Valley leaders. Murkomen wants to be the only man for the DP in this region. We will not accept it,'' said Sudi.
The MPs also accused Murkomen of benefiting from this Sh1.8 billion NYS scam, by allegedly getting a tune of Sh1 million.
They demanded that the senator makes public the source of money that he used to purchase tracts of land in Eldoret's Elgon-View estate.
"He should tell Kenyans the source of money that he used to buy land in Elgon-View. He thinks we do not know. We'll reveal everything,'' said Keter.
The two were speaking to the press in Eldoret, Sunday.