NEW : A male motorist shoots female Canadian border officer in her head , police say . NE : Motorist then apparently kills himself , police say . NEW : The officer is breathing when she 's taken to hospital . NEW : Police shut down the Peace Arch across from Blaine , Minnesota .
NEW : A male motorist shoots female Canadian border officer in her booth , police say . NEW : Motorist then apparently kills himself , police say . NEW : Border officer is breathing when she 's airlifted to hospital . NEW : Authorities shut down the Peace Arch across from Blaine , Washington .