A Chetak helicopter belonging to the Navy today crashed into a river near Anakapally town in Andhra Pradesh injuring the pilot and three others onboard. According to initial reports, the pilot and three trainee pilots were injured. DIG Visakhapatnam range Swomya Mishra said, the mishap occurred when the chopper touched a high tension wire while flying low near Sarada river bridge. All the injured have been admitted to a local government hospital.<br/><br/> <br/>