Deputy Brian Hirzel, already under investigation for fatally shooting a Spokane Valley pastor, now is the subject of a new probe. Hirzel failed to disclose, as required under Sheriff’s Office rules, that he and his wife are co-owners of a business that sells sex toys online, and could face disciplinary measures if investigators determine he’s taken an active role in the company’s operations, Spokane County Sheriff Ozzie Knezovich said Monday.