"Shocked by his sudden demise," Sonia Gandhi said in a statement. The Congress leader then said that Dave was a "soft spoken and gentle human being". "He will be fondly remembered for his humble personality," she added.
She also conveyed her condolences to members of Dave's family, admirers and supporters.
Even Prime Minister Narendra Modi expressed shock over Dave’s demise. In a series of tweets PM said that he was with Dave till late Wednesday night.
Dave passed away at his official residence in the national capital. The incident came to light at around 7.30 a.m, when his staff tried to wake him up.
Dave's death was confirmed by family friend, Meena Agarwal. She said: "His body will be taken for embalming. And will be later taken to Indore."
Dave was born in Badnagar in Madhya Pradesh. He has been a member of the Rajya Sabha since 2009.
He was sworn in as a Minister of State with independent charge of Environment, Forest and Climate change on July 6, 2016 following a reshuffle in Prime Minister Narendra Modi's cabinet.
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