My sister ( Indian citizen) is in Thailand holding Indian passport and married to a Thai citizen who is a OCI card holder. The son of both is a Thai national and having Thai passport
Now my sister want to visit India with his son & want to stay in India for 3 months of period.
I would like to which Indian visa she has take for his son. The age of the boy is 14 months. Kindly give details of visa procedure too.