Pooran, 23, and his brother-in-law's wife, Manisha, 21, both residents of Libaspur, were found dead in the vehicle parked in Narela area in north Delhi, police said.
There were signs of bleeding from the mouths of the two victims whose bodies were lying in the truck's space for carrying cargo, police said.
Police said, prima facie, the two committed suicide by consuming pesticide as two empty glasses were recovered from the spot and no injury marks were noticed on their bodies.
However, no suicide note was recovered, police said.
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