In a blow to Punjab Congress, two of its senior leader resigned from the party and joined the ruling Shiromani Akali Dal on Friday.
Trudeau's first bilateral visit to India was hit by a controversy over the dinner invitation to Atwal by the Canadian high commissioner in New Delhi.
Convicted terrorist Jaspal Atwal posed with Canadian Prime Minister Justin Trudeau's wife at an event in Mumbai.
The controversy surrounding Atwal erupted last month after he was photographed with Trudeau's wife Sophie Gregoire and other senior officials at the event in Mumbai as part of Trudeau's first state visit to India.
In a background briefing arranged by the Prime Minister's Office, a government official last week suggested that Atwal's presence was arranged by "factions within the Indian government who want to prevent Prime Minister Narendra Modi from getting too cosy with a foreign government they believe is not committed to a united India," the paper said.