"The Politburo of the CPI(M) calls upon central government to immediately provide all assistance to the Uttarakhand government on a humanitarian basis to contain any further damage and to ensure speedy rehabilitation and livelihood of the affected people," the Left party said in a statement.
Torrential rains and cloudbursts in Uttarakhand's Pithoragarh and Chamoli districts earlier this week have killed 21 people, while 11 others are yet to be traced.