Texas Gov. Greg Abbott said Santa Fe school shooting suspect Dimitrios Pagourtzis obtained the two guns used in the murders from his father.

Abbott, a Republican, said the elder Pagourtzis legally owned the weapons and that "neither of the weapons was legally possessed" by Dimitrios.

The governor said the suspect intended to commit suicide after the shooting, according to his journal entries, but that the 17-year-old told arresting officers "he didn't have the courage" to kill himself.

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Another person of interest is being sought by authorities, Abbott said, adding that several adjacent law enforcement agencies as well as the federal Bureau of Alcohol, Tobacco and Firearms are on-scene.

He said that, prior to the shooting, he planned to put forward a "policy paper" on preventing gun violence in the state of Texas next week.

The initiative, he said, would urge the state legislature to address gun violence and its causes, including mental health issues.

He praised the school district in the city of Lubbock for their school safety policy that he said should be a model for the rest of the state, especially in the wake of Friday's tragedy.

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