The accused, Shikato Sema, is posted in the Assam Regiment. The victims have been identified as Naushad Aminuddin (37) and Mohammad Arif (46), they said.
Aminuddin died in the accident while Arif escaped with injuries. The truck was trying to overtake the motorcycle but ended up hitting it near the Assam Bhawan, the police said.
While Arif, who was riding the two-wheeler, was thrown a few metres away, Aminuddin was crushed under the wheels of the truck, the police said. The duo was wearing helmets.
Aminuddin was a carpenter by profession and was on way to Palam for work when the accident happened.