This story was updated to include the apology from Sen. Lacson.

Metro Manila (CNN Philippines, May 3) — Senate President Aquilino "Koko" Pimentel III denied Thursday having an agreement with Senate Majority Floor leader Vicente "Tito" Sotto III to transfer the Senate presidency.

"No agreement. But will talk to Sen. Sotto immediately upon arrival. Then hold [majority] caucus," Pimentel told CNN Philippines.

This follows a statement by Senator Panfilo Lacson that the "there is already an agreement or understanding" between the two leaders on the transfer of the Senate presidency.

He added the Senate will respect whatever is agreed upon by Pimentel and Sotto, and will vote accordingly.

Lacson later apologized for the statement through a tweet.

"An apology is in order and is therefore offered to SP Pimentel. It was my understanding that a leadership change in the Senate between him and Sen Sotto does exist," he said.

Sotto, meanwhile, said he will accept the post should the move push through.

"I will humbly accept leadership chores that my colleagues will entrust with me," Sotto said.

Both Pimentel and Sotto were elected to their posts on July 25, 2016.

Pimentel is also the current president of Partido Demokratiko Pilipino-Lakas ng Bayan (PDP-Laban), the current ruling party of President Rodrigo Duterte.

Sotto, meanwhile, is a member of the Nationalist People's Coalition, and is allied with PDP-Laban as part of the supermajority bloc.