THREE days before Roberto Umpad, 29, killed his two-year-old son, neighbors and relatives had noticed his unusual behaviour.

Hilumon siya ug magsigeg hinuktok (He was very quiet and he looked like he had a lot on his mind), said Odessa Capili, his neighbor.

In 2012, Umpad underwent treatment at the Vicente Sotto Memorial Medical Centers (VSMMC) Center for Behavioral Science after suffering from a nervous breakdown.

Traumatic youth

According to a relative, who asked not to be named, Umpad had a traumatic childhood because his father left him when he was still young while his mother went abroad.

Umpad had been admitted to the psychiatric ward six times.

He last went to the VSMMC on Feb. 14, 2013 for his check-up.

He was supposed to continue his medication but because they had no money, he stopped taking them last year.

Dr. Rene Obra, chief of the Center for Behavioral Sciences, said they diagnosed Umpad with schizophrenia.

The doctor described schizophrenia as a mental illness where a person loses contact with reality and experiences mood disorder symptoms.

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Man who killed son a schizophrenic: doc