Amani National Congress party has lashed at ODM Secretary General Edwin Sifuna, accusing him of hurling insults at its senior members among them Musalia Mudavadi.
Last week, Sifuna launched a scathing attack on Mr Mudavadi, accusing him of belittling the handshake between President Uhuru Kenyatta and Raila Odinga.
While revisiting Raila Odinga's controversial swearing-in in January 2018, Sifuna claimed that Mr Mudavadi, who had supported the plan, switched off his phone and disappeared.
A statement from the party partly read: “At the last minute, he is known to have switched off his phone, possibly to have it "woken up" by a Nigerian line later, and disappeared from his colleagues.”
“In subsequent years, Mr Mudavadi has perfected the philosophy of the so-called safe hands, waiting like the proverbial hyena who waited for a man's hands to fall,” it read.
But on Sunday, ANC deputy party leader Ayub Savula took Sifuna head on, dismissing him as a perennial loser who never consults Raila before issuing statements.
He told Sifuna to refrain from the habit because he does not understand the political landscape in Kenya.
"Sifuna is a perennial election loser having unsuccessfuly vied for MCA, MP and Senate seats in the past," he said.
Savula wondered whether Mr Sifuna consults his party leader before making embarrassing utterances in public.
"We have no issues with Raila because the former Prime Minister has not issued statements that demean Mudavadi or ANC."
Mr Sifuna was appointed as Secretary General in 2017, effectively taking over from Senator Agnes Zani. He has been vocal on matters to do with ODM.