MANILA, June 4 -- House trial spokesperson and Lanao del Sur Rep. Zia Alonto Adiong on Thursday said the House prosecution panel's confidence in securing the conviction of Vice President Sara Duterte rests on the strength of its evidence, not on the legal troubles confronting some senators associated with her.

In a media interview, Adiong was asked whether the prosecution panel had become more confident as some senators perceived to be allies of Duterte, including Sen. Ronald "Bato" dela Rosa and Sen. Jinggoy Estrada, faced separate issues unrelated to the impeachment case.

"Well, yes. But the House prosecution panel has confidence in our evidence that we already obtained and we will present to the impeachment court," he said.

He stre...