MANILA — If an impeachment case prospers, retired Davao policeman Arturo Lascañas said he wants to testify against President Rodrigo Duterte.

Senator Antonio Trillanes IV added that Lascañas also allegedly wants to testify if a case against Duterte reaches the International Criminal Court.

“Inaabangan din niya (Lascañas) kung matutuloy itong impeachment ni President Duterte, siya iyong magtetestigo diyan pati na rin sa international court,” Trillanes said in an interview on DZMM on Saturday.

(He's waiting if progress is going to be made as far as the impeachment complaint against President Duterte is concerned, because he wants to testify in the international court as well.)

Duterte said earlier this week that he will not stop his war against illegal drugs amid an impeachment case and possible prosecution before the ICC.

Trillanes said Lascañas is due to reveal more details about the alleged Davao Death Squad, which the former police officer claims takes orders from Duterte.

“Marami siyang sasabihin iyong ibang trabahong pinagawa sa kanya, iyong iba natuloy, iyong iba hindi,” Trillanes said.

(He'll reveal more, the other work they did, some that got done, some that didn't.)

Earlier this month, Lascañas testified at the Senate where he detailed Duterte's alleged involvement in alleged extrajudicial killings in Davao City during his term as mayor.

Lascañas had denied the existence of the death squad in his prior testimony at the Senate last year.

In defending his change of heart, Lascañas said he was not ready at that time to reveal what he knew out of fear for his safety and his family's.