 Unconfirmed reports said six Kenyan herders were killed by Ethiopian aircraft that crossed over the border of Somalia.Cordoning off the border, 20 Kenyan tanks were dispatched to patrol the frontier stretching between Liboi, in Garissa district to Kiunga, Lamu district.Reports said ICU troops were split across Afmadow and Badade districts, and possibly concentrated at the former Al-Ittihad Al-Islamiya (AIAI) stronghold of Ras Kamboni.