A former Filipino migrant worker was stabbed to death by his own son at their home in western Visayas in the Philippines.

On Monday evening, Bartolome Tumlos, 65, who used to work overseas and more recently worked as a farmer in the Philippines, had an argument with his son Arnel in their home in Barangay Tuburan, Maayon, The Daily Guardian reported.

According to neighbors, they heard the father and son arguing in their home. One neighbor named Rochelle Javila said that although she heard Tumlos yelling for help, no one went to check on them.

Tumlos’ body was discovered the next morning in a rice field in front of his house. He had sustained fatal stab wounds. Tumlos’ son surrendered to the police.

Preliminary police investigations have ascertained that the suspect suffers from a mental illness, which may have triggered the attack.