Alvaro Castillo's sister took the stand on Tuesday, speaking about being raised by an abusive father.

Castillo is accused of killing his father and opening fire at Orange High School in August 2006.

Victoria Castillo said their parents didn't always agree on how to raise their children.

Their father did not allow them to have friends and monitored what the children ate.

"He believed all friends only led you to destruction and they would not let you succeed in life while you were studying," said Victoria Castillo.

She spoke about her father's constant anger and the heated arguments between her parents.

"He would start talking and my dad would get angrier and angrier. She would try to stand up for herself and my dad would go toward her in rage," she said.

"I've seen him grab her by the hair and pull her down to the floor, or push her or smack her and he would do that to us too if he got really angry."

The defendant's mother, Vickie, took the stand in the afternoon. She also testified about their troubled home life, a history of mental illness on her side of the family, and her son's paranoia and suicide attempt in his teens. She recalled a conversation she had with Alvaro the day after he was arrested for the shootings.

"He always said that what he did was a call from God," Vickie Castillo said. "To save his dad and to save the kids, he did what he was told to do."

She also said her concerns grew after she told her son to confess to a priest.

"He said, 'what do I have to confess about? I didn't do anything bad, I did the right thing,'" Vickie Castillo said. "I looked at Victoria and we both realized he was very sick."

The psychiatrist who met with Alvaro Castillo also took the stand Tuesday.

Dr. Kyle Johnson, a resident in the psychiatry department at UNC Hospital, spoke to Alvaro Castillo after the shootings. Johnson said Castillo spoke openly and about the shootings.

"He [Castillo] felt he sacrificed his father in order to prevent him from having any pain or spare him from judgment he received due to the perceived abuse," said Johnson. "He also discussed going to school trying to spare students and sacrifice students so they wouldn't suffer the pain he had gone through in his life as well."

"He felt it would benefit people and it wasn't an act of harm but an act of love."

Johnson said Castillo also spoke about hallucinations and his "twin" who told him to do bad things.

"He talked about feeling paranoid and cameras were in air vents and mics hidden around the room," said Johnson. "He talked about video tapes and he at times inflicted harm on himself and beat himself with belts and fists."

Johnson mentioned when evaluating someone with suspected mental illness, the person is usually guarded and doctors have to prod or ask more questions to get more information. Johnson said Castillo was very open and forthright during their conversation.

"I felt he was psychotic and was a danger to himself and others and needed involuntary petition and steps taken to ensure his safety in the following days."

Orange County deputy Raeford Thompson also took the stand Tuesday. He was in the small holding cell with Castillo after the shooting.

Thompson said Castillo admitted to shooting his father and investigators could find pipe bombs and videos at his home.

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