The Camarines Sur Police are hot on the trail for a man who reportedly hacked his young son in the neck killing him almost instantly following a heated argument on New Year’s Day inside their home in a remote village in Tigaon, Camarines Sur. Provincial Police Chief Primo Golingay identified the suspect as Efren Sta. Maria, 57, and a resident of Zone 1, Barangay Salvacion, Tigaon. Golingay said the suspect suddenly hacked his son, identified as Ryan Sta. Maria, in the neck with the use of a bolo. The suspects immediately fled after the hacking incident.