Panda met BJP chief Amit Shah and joined the party at its office in the national capital.
Taking tough, Home Minister Rajnath Singh on Thursday declared that strong action will be taken against NDFB(S), which massacred over 70 people in Assam on Tuesday, asserting that the Centre has "zero tolerance" policy for such "crafted terror".
An Arunachal Pradesh minister on Tuesday warned of a 'Kargil-like' situation in the border state as he spoke of a lack of development forcing locals to migrate away from far-flung areas and giving China an opportunity to venture deeper inside Indian territory.