Philippine National Police report that three suspects in the killing of US marine biologist Kent Carpenter have been arrested. Police say the arrests include the alleged gunman and two other suspects, following the investigation into Carpenter’s death in the Philippines. One outlet reports that the arrests are part of action taken by regional police units, with Philippine National Police spokesperson Allen Rae Co stating that two of the suspects were arrested by the Negros Island Region Police. Another report says three of four suspects have been taken into custody, leaving one suspect still at large, according to police updates. The reports consistently describe the case as an ongoing investigation led by Philippine authorities, with arrests made in the days prior to the latest announcements. No additional details about motive, the location of the arrests, or the identities of the remaining suspect are included in the provided summaries. The reports are based on Philippine police briefings and announcements.