Despite his relentless efforts to save embattled Bungoma Senator Moses Wetangula, NASA senators are said to have openly told off Raila Odinga in Thursday's meeting.
Moments after the meeting, a visibly helpless said NASA senators would go on a retreat to make final decision on the matter.
"We have agreed that senators will go on retreat within the next 14 days and discuss the issue and report back to the summit," he said.
He added: "They have expressed themselves frankly on the issue and Wetangula, who has been their leader, has had opportunity to respond."
But details emerging from the meeting indicate that a number of senators openly rejected Raila's plea to have them reinstate Wetangula.
James Orengo, who had replaced Wetangula as Senate Minority Whip, accused Raila's co-principals of failing to explain why they missed swearing-in.
On his part, sources say, Narok Senator Ledama Ole Kina, insisted that Wetangula's removal was final thus they will not change decision.