According to police, Sepoy Kiran Singh, a Manipur native, was on leave for the treatment of his mother -- a cancer patient -- and was headed to AIIMS along with his friend Jeetu when the accident took place near a flyover at around 10 PM.
Singh died on the spot as the truck hit his motorcycle while Jeetu, who was riding pillion, sustained critical injuries, they said.
Some locals rushed the duo to the AIIMS trauma centre where Singh was declared dead while Jeetu was admitted with critical injuries.
A case in this regard has been registered at South Campus police station under Sections 304A and 279 of IPC, police said, adding that the footage of CCTV cameras near the site of the accident is being studied in connection with the investigation, added the officer.
Singh, who was posted at the cantonment here, had taken 10 days' leave for the treatment of his mother, who has been diagnosed with oral cancer.