"According to the statement the suspect voluntarily gave investigators, he has had fantasies of stabbing people to death since he was in elementary school, " a statement from the Harris County Sheriff's Office said.

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"To company with them is a disgrace for the clear and honest-minded Korean nation as they are ignorant in politics, vulgar in morals and lack elementary human nature, " the statement, attributed to North Korea's National Defense Commission, considered its most powerful organ, said of Mr. Lee's government.

WSJ: Pyongyang Resumes Hard Line On South