Where do 7 north-east states of have a common high court?

The seven north-eastern states of India - Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, Tripura have a common high court, known as the Gauhati High Court. The Gauhati High Court is located in Guwahati, Assam, and exercises jurisdiction over all the seven north-eastern states.