The official Twitter handle of the Congress on Thursday posted some old photographs of former Prime Minister Manmohan Singh on board Air India One.
In the photos, the former PM can be seen interacting with the media. The Congress in an apparent jab at Prime Minister Modi wrote: "Some photographs are harder to copy," the Congress said.
This post comes hours after Prime Minister Modi posted a photograph on Wednesday from his US-bound flight. He is seen studying some files during the flight.
Following PM Modi's photo of working during a long flight, the Congress's post came as a sharp swipe at PM Modi that former prime minister Manmohan Singh used to even address press conferences on his flight.