A youth and his fiancee were killed after their scooter was hit from behind by a truck near Kolkata Gate in New Town late on Saturday, police said. Both were wearing helmets.

The scooterist was trying to steer past traffic guardrails placed at an intersection when it came in front of the truck, several witnesses have told police.

Dipayan Mukherjee and Medha Paul, both employees of a multinational IT company, were headed towards the airport after dinner at a restaurant in New Town when the accident happened, said an officer of the traffic wing of Bidhannagar Police Commissionerate.

A relative of Mukherjee said he had lost his father several years back and stayed with his mother at their Baranagar house. “Dipayan and Medha were to get married soon. They had postponed their wedding because of the lockdown,” said the relative, who did not want to be named.

The officer of the commissionerate said Mukherjee had taken a left turn from Kolkata Gate and hit the airport-bound flank of Major Arterial Road when the truck, headed towards the airport from the Unitech intersection, rammed into the two-wheeler.

A guard at the site where a pedestrian subway complex is being constructed, at the base of Kolkata Gate, said the scooterist was trying to weave through guardrails when the truck hit the vehicle from behind.

The truck’s wheels went over Mukherjee and Paul. The guards at the construction site alerted police and the two were taken to Salt Lake Sub-divisional Hospital, where they were declared dead.

“Both had suffered critical head injuries and lost a lot of blood. They also had multiple fractures. We failed to revive them,” said a doctor who examined them.

Dhirtiman Sarkar, deputy commissioner, traffic, Bidhannagar commissionerate, said CCTV cameras at the crossing captured the accident. “We are trying to track down the truck,” Sarkar said.