Mary Jane Veloso's recruiter surrenders

(CNN Philippines) — Maria Kristina Sergio, alleged recruiter of Mary Jane Veloso, who is awaiting execution in Indonesia for drug trafficking, voluntarily surrendered to authorities Tuesday (April 28).

Sergio turned herself in at around 10:30 a.m. to Chief Insp. Julius Manocdoc, chief of operation of the Nueva Ecija Police Station.

She is facing charges of illegal recruitment, human trafficking, and estafa.

Related: Letters from death row: Mary Jane Veloso writes

In an interview with CNN Philippines' Newsroom on Tuesday, Chriz Valdez, media liaison officer of Migrante, said Sergio surrendered with her live-in partner Julius Lacanilao, who is also facing charges of illegal recruitment.

Valdez said Sergio turned herself in to prove her innocence of all the accusations against her.

'Death threats'

Sergio claimed that she has been getting death threats from unknown numbers on her phone.

She added that she has also been receiving threats from Mary Jane's parents on Facebook.

She asked Public Attorney Office chief Persida Acosta to handle her case.

Right now, she will be under the custody of the Nueva Ecija Police Station and will be asked to sign a document affirming this.

Sergio is not yet considered as a suspect, until police get documents from the National Bureau of Investigation, which filed a case against her.

According to earlier reports, Sergio, Lacanilao, and another man, said to be of African descent and identified only as Ike, were the ones who recruited Veloso, promising her a job in Malaysia.

Veloso is scheduled to be executed Tuesday by firing squad in Indonesia.

Related: Executions 'will go ahead as planned,' says Indonesia

CNN Philippines' JC Gotinga contributed to this report.