I've been saying this for a while now that India is trying to make a case for war with BD. Losing a puppet as useful as Sheikh Hasina was a massive loss for them, and they'll look to both punish BD, and bring it back under its sphere of influence through force.
Right now they're accusing BD's security forces of cooperating with the ISI, and of threatening India's siliguri corridor (aka India's chicken neck).
I do think they're gonna attack BD sooner or later under the guise of both fighting terrorism, and protecting the Hindu population.