Kadima sources told Israel Radio Tuesday that former Kadima leader and opposition chairwoman Tzipi Livni will be announcing her departure from politics later in the day.

According to Ynet News, Livni will hand in a letter to Knesset Speaker Reuven Rivlin on Tuesday at 12:30 p.m. officially announcing her departure from Kadima and the Knesset.

Livni, who lost the leadership of the Knesset’s largest political party to Shaul Mofaz in internal primaries last month, has said that she was tired of politics.

Since her defeat to Mofaz Livni has remained mum on her plans for the future, but analysts claim she would not be willing to serve under her former rival, with whom she battled bitterly.

In related elections news, sources close to Aryeh Deri said on Tuesday that the former Shas leader was contemplating starting his own party rather than return to Shas.

Deri, who was convicted of bribery in 1999 while interior minister and eventually served a two-year jail sentence, announced his return to politics in 2011.

A recent YNet poll showed Deri garnering three Knesset seats if he ran under his own party. Shas with Deri would have 11 mandates, the same as in the current Knesset, but a Shas without Deri would garner only seven.