A Boston University professor is on unpaid leave following his arrest on charges that he attacked a woman with a key and threatened her with brass knuckles inside an Arlington home, officials said on Sunday.
Pedro Lasarte, 65, was arrested Feb. 10 at a house on Moulton Road after a woman told police that he scratched her arm with a key and brandished brass knuckles, telling her, “I know where to hit you with these where there won’t be a mark,” according to an Arlington police report.

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