Guitarist and vocalist Lindsey Buckingham was attacked by a woman when he showed up to an appointment in Santa Monica, Calif., according to a report. NBC4 Investigates reports that when the former member of Fleetwood Mac entered the building, a woman threw an unknown substance at Buckingham before running away.Law enforcement sources told the outlet that the woman had discovered the time and location of Buckingham's appointment and waited for him there before he arrived.