Two brothers were found dead in Sitio Nagtupacan, Barangay Isit, Dolores, Abra, Thursday.
The victims were identified as Andy, 29, and Jun, 25.
Residents heard gunshots late Wednesday but did not immediately inform authorities.
A passerby discovered the bodies with bullet wounds and alerted the police.
A blue Honda XRM motorcycle without a license plate was found near the victims.
Police recovered empty shells from a .45 caliber pistol.
The Abra Provincial Forensic Unit processed the crime scene.
Follow-up investigation is ongoing.