Jamshedpur: Three youngsters were killed and a couple and their two minor children sustained injuries when their bikes collided with each other at Edelbera on Chakradharpur-Kharsawan road under Chakradharpur police station limits on Monday. “The three who died were on a bike without helmets and were traveling towards Chakradharpur when it collided with another motorcycle coming from opposite direction. A couple and their two kids sustained injured,” said Chakradharpur police station in-charge Parveen Kumar. Shatrughan Taisi, Noro Dongi and Laxman Gagrai, between 20 and 22 years of age, died on the spot and their bodies have been sent for autopsy, police said. They hailed from Potka Sai village in Chakradharpur. The injured have been admitted to Chakradharpur sadar hospital.