The Department of Justice (DoJ) summoned on Monday Senator Manuel Roxas III and two broadcast journalists as possible witnesses to corroborate the counter-affidavit filed by Sen. Panfilo Lacson to refute his alleged involvement in the murder of publicist Salvador "Bubby" Dacer in 2000.

Roxas had been summoned as a possible witness for Lacson, and will corroborate Lacson's counter-affidavit in which he claimed that he was with several government officials in 2000 when Lacson was supposed to have ordered Dacer killed.

Lacson said Roxas will execute an affidavit saying that they were with an entourage of government officials accompanying former President Joseph Estrada when he was supposed to have ordered another police officer to kill Dacer.

The government's witness in the case, former police superintendent Cesar Mancao, said in his testimony that he heard Lacson, then the chief of the Philippine National Police (PNP), ordering former police senior superintendent Michael Ray Aquino to push through with the operation to kill Dacer.

"It's not true that I was ordering Aquino to kill Dacer at that time because I was with Roxas along with former officials as part of Mr. Estrada's contingent in a United Nations summit," Lacson said.