Police in Spokane, Wash., have arrested a 16-year-old boy accused of stabbing his mother in the head multiple times.

KHQ-TV reports (http://is.gd/sNVAbR) that the woman was taken to a hospital Tuesday evening with serious but not life-threatening injuries. Police say most of the wounds were on her skull.

Police say a 13-year-old son called 911 to report that his brother was stabbing his mother.

The 16-year-old was booked for investigation of first-degree assault.

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Information from: KHQ-TV, http://msnbc.msn.com/id/3082888/