Miran Shah
It seems that the importance of Sanabad-Mashhad continually increased with the growing fame of its sanctuary and the decline of Tus, which received its death-blow in 1389 from Miran Shah, a son of Timur. When the Mongol noble who governed the place rebelled and attempted to make himself independent, Miran Shah was sent against him by his father. Tus was stormed after a siege of several months, sacked and left a heap of ruins; 10,000 inhabitants were massacred. Those who escaped the holocaust settled in the shelter of the 'Alid sanctuary. Tus was henceforth abandoned and Mashhad took its place as the capital of the district.