Metro Manila (CNN Philippines) — Embattled senator Leila de Lima on Tuesday said she expects alleged Eastern Visayas drug lord Kerwin Espinosa to implicate her in the illegal drug trade in Wednesday's Senate investigation.

"No-brainer 'yan. Wag na ho tayong maglokohan talaga naman na expected na yan na ituturo na naman ako katulad nung mga naging witness sa House inquiry," De Lima said in a chance interview with reporters. She was referring to a House of Representatives inquiry into the drug trade, where convicted drug lords accused the senator of receiving pay-offs to fund her senatorial campaign.

[Translation: That's a no-brainer. Let's not fool one another, it's expected that I will be implicated again, like what other witnesses did in the House inquiry.]

De Lima, as a member of the Senate Committee on Justice and Human Rights, said she will be present at the committee's investigation on Wednesday into the killing on November 5 of Mayor Rolando Espinosa of Albuera, Leyte. Mayor Espinosa was the father of Kerwin.

The Senate summoned the younger Espinosa to the Wednesday hearing to shed light into what Senate Committee chairman Richard Gordon called the "premeditated" killing of the mayor. Police claim the mayor was killed in a shootout while in jail.

Justice Secretary Vitaliano Aguirre earlier told CNN Philippines that he is confident of Espinosa tagging De Lima as among the narco-politicians who protected "big time" drug transactions in Eastern Visayas.

Read: DOJ Secretary: Kerwin almost sure to implicate De Lima

De Lima dismissed these accusations, and reiterated her denial that she received P8 million from Espinosa.

"I'm telling you, I have not received a single centavo from Kerwin Espinosa whether directly or indirectly in any instance; in the same manner that I have not received a single centavo from those so-called drug lords," De Lima said.

Espinosa said he will tell all on the illegal drug trade, including the names of those involved.

Read: De Lima predicts grim fate for alleged drug lord Kerwin Espinosa

De Lima said she does not plan to interrogate Espinosa during the hearing, which the Senate Committee on Justice and Human Rights is spearheading together with the Committee on Public Order and Dangerous Drugs.

Both father and son were in President Rodrigo Duterte's narcolist of government and police officials alleged to be abetting illegal drugs, which the President has waged a war on since he came into office in July.

Espinosa was brought back to the Philippines on November 18 following his arrest in Abu Dhabi a month before over drug trafficking charges.

Read: PNP Chief: They can get Kerwin Espinosa over my dead body

CNN Philippines' Cecille Lardizabal contributed to this report.