Metro Manila (CNN Philippines, March 20) — Local police may have committed mistakes that resulted in the death of a local official's son and his companion in a city southeast of Metro Manila last week, a regional police official said Wednesday.

Chief Supt. Edward Carranza, Calabarzon police chief, referred to Christian Gayeta, son of Sariaya, Quezon Mayor Marcelo Gayeta. A police report stated the younger Gayeta and Christopher Manalo died in an encounter with Tayabas police on March 14.

The report stated Gayeta and Manalo allegedly threatened a gas station attendant, which led police to respond to the situation.

But Carranza said they are investigating whether or not an encounter actually happened. He questioned the trajectory of gunshot wounds.

"Yun nga ang isang medyo kataka-taka. Sa isang engkwentro kasi, kagaya nyan, nakasakay sa motor, dapat yan ang initial na tama hindi nga lang dapat dalawa yan e kung nagkaputukan e. At hindi naman yan ganyan kagaling na para mabaril mo antimano dibdib patay. And yung pinache-check ko yung motor. Yun bang motor, meron ba siyang mga galos ba ang motor, yung mga nag-skid ba. Siyempre there was an encounter sumemplang ang motor. So that's one thing na chine-check din ng provincial director," he said.

[Translation: That's a bit odd. In an encounter like that, they were riding motorcycles, the initial hits should be more than two if there was a firefight. And they weren't so good a shot that the shot would lad squarely on the chest. And I am having the motorcycles checked. Are they scratched, did they skid. Of course there was an encounter and the motorcycles would fall. So that's one thing the provincial director is checking.]

Carranza added, "Kausap namin yung NBI (National Bureau of Investigation). Siguro by Monday or Tuesday, hihintayin na lang nila yung SOCO (scene of the crime operatives) report and they will be filing a case of double murder."

[Translation: We are in contact with the NBI. Maybe by Monday or Tuesday, they will wait for the SOCO report and they will be filing a case of double murder.]

Police testimony stated firearms were found on Gayeta and Manalo when they were stopped at a checkpoint.

However, Gayeta's family doubts the encounter angle, noting that aside from two gunshot wounds in his chest, marks were also seen on his hands.

They said Gayeta and Manalo may have been tied up or handcuffed.

Carranza has ordered the Quezon police to put those involved in the case under restrictive custody, along with Supt. Mark Joseph Laygo, Tayabas police chief.