Guwahati: Union Home Minister P Chidambaram on Monday admitted there was not enough police force to stem the ethnic violence in Assam when it was in its initial stages. “There was not enough police force on ground initially when first violence erupted on July 19 but subsequently the security forces came and the situation was brought under control,” Chidambaram told a Press conference here after a day-long visit to relief camps in Kokrajhar and Chirang districts.