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Embattled Chief Justice Maria Lourdes Sereno believes Court Administrator Jose Midas Marquez was likely behind the "Red Monday" protest at the Supreme Court that sought her resignation.

"Marami ang nagsasabi sa akin na ganun. Marami akong nabasang report na 'yun ang impression. Palagay ko no, oo," she said Wednesday in a Bandila DZMM interview.

Marquez, who was among those who testified before the House justice committee on the impeachment complaint against the chief magistrate, has yet to comment on Sereno's statement.

• Marquez: Sereno's staff flew in business class

Sereno, who is on indefinite leave in preparation for her looming impeachment trial at the Senate, said it was not the entire judiciary that was up in arms calling for her to step down.

There were only 20 people who signed the manifesto while majority of Supreme Court employees stood their ground to preserve the independence of the judiciary.

"Nakita natin pati si (Retired) Chief Justice (Hilario) Davide, sabi niya, 'Kayo ay rumespeto ng due process. Maging neutral. 'Wag makilahok sa politika,'" Sereno said.

• Davide, Negros judges call on Supreme Court employees to stay neutral

It was last year, she shared, that she faced mounting pressure to step down.

"Kung hindi ka magre-resign, pahihirapan namin ang buhay mo. Kung hindi ka magre-resign, ipapahiya ka namin. Sisiraan ang iyong character. Yuyurakan ang pangalan mo," she said.

She said another bid to oust her was made by Solicitor General Jose Calida through a quo warranto petition.

"'Pag mahina ang kaso, hanap ng ibang paraan," Sereno said.

• SolGen quo warranto petition vs Chief Justice Sereno

DE CASTRO

In the same interview, the chief magistrate discussed her supposed beef with Associate Justice Teresita Leonardo de Castro.

"Sa akin ho, wala. Marami namang nakakakilala sa akin. Hindi ho ako madaling mag-inda. Hindi ho ako nagtatanim ng galit," she said.

• De Castro censures Sereno speech, cites pending court case

"Kasi kailangan kino-conserve namin ang energy namin para makapagsilbi sa bayan. Kung 'yang mga bagay na 'yan binigyan mo ng atensiyon, kailan uusad ang mga kaso?"

Despite the infighting in the High Court, Sereno said she holds no grudges against anyone.

• Judiciary in turmoil: How the SC responded to Sereno, Corona ouster cases

In case she wins in the impeachment trial, Sereno hoped to work with her colleagues with a fresh start.

"Iisa lang ang ating trabaho. Puwede ba pag-usapan nalang natin ulit? Pag-usapan natin ano ang dapat baguhin ko?" she said.