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FORT WORTH (CBDFW.COM) – Police have yet to determine the motives of a post office employee who threatened to shoot a co-worker.

Fort Worth police arrested Arsenio Manansala for causing a terroristic threat.

Investigators said he called the post office on Mark Four Parkway in north Fort Worth and threatened to shoot another employee, and anyone else who got in his way.

Manansalao was unarmed when police arrested him.

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