At least three people were killed and four were injured in head on collision between bus and truck in Natore.The incident took place on Bonpara-Hatikumrul highway of Baraigram Upazila in the district on Wednesday at 10am.Identities of the deceased could not be ascertained immediately.Monir, Sub Inspector of Baraigram Police Station, confirmed the matter to Jagonews24.com.