(WHDH) — A tipster from Massachusetts warned the Broward County Sheriff’s Office months before the Parkland, Florida, tragedy that Nikolas Cruz was a threat to shoot up a school.

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The tipster told the sheriff’s office in a phone call on Nov. 30, 2017, that Cruz was “collecting guns and knives,” according to law enforcement call logs. The tipster also said that Cruz could “kill himself one day” and that he “could be a school shooter in the making.”

The logs also indicate that the tipster advised officials that Cruz was no longer living at his Parkland address and storing weapons at a friend’s house.

A deputy within the Broward County Sheriff’s Office reportedly advised the tipster to contact the Palm Beach Sheriff’s Office because Cruz was said to be living Lake Worth.

The PBSCO confirmed to 7News that they were never contacted by the tipster. An internal affairs review was initiated.

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Cruz is charged with killing 17 people in the Valentine’s Day shooting at Marjory Stoneman Douglas High School. Authorities say he was armed with an AR-15 assault rifle.

The report was one of about two dozen that warned of Cruz’s erratic, violent and concerning behavior. It’s not clear how the tipster knew Cruz.

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