The battles along the western borders of Valluvanadu were bitter, for they were marked by treachery and crime. Panthalur and Ten Kalams came under Kozhikode only after a protracted struggle. The assassination of a minister of Kozhikode by the chief minister of Valluvanadu while visiting Venkatakkotta in Valluvanadu sparked the battle, which dragged on for almost a decade. At last the Valluvanadu minister was captured by Samoothiri's warriors and executed at Padapparambu, and his province (Ten Kalams, including Kottakkal and Panthalur) were occupied by the Samoothiri. The Kizhakke Kovilakam Munalappadu, who took a leading part in this campaign, received half of the newly captured province from Samoothiri as a gift. The loss of this fiercely loyal chief minister was the greatest blow to Valluvanadu after the loss of Tirunavaya and Ponnani.