Daltonganj: A man was killed, and two others were injured after two motorbikes collided head-on at Imli Chowk under the Panki police station limits around 11.30 am on Monday, police said. The deceased was identified as Ankit Singh, in his early twenties. Ankit was declared dead on arrival at Panki CHC. Deepak Kumar Singh, the officer-in-charge of Panki PS, said none were wearing helmets.