To counter this acts of atrocities by Tangsu Nagas, Suhenphaa dispatched Taokangbanrek Borgohain with a contingent of Ahom soldiers.
Suhenphaa immediately ordered fresh recruitment of soldiers and after gathering a huge army, he dispatched the newly appointed Nangraang Borgohain against the Tangsu Nagas.
After fierce battle, Nangraang Borgohain scored complete victory against the Tangsu Nagas, and they were forced to submit to the Ahoms.
Nangraang Borgohain brought several Naga prisoners as a symbol of his victory and after obtaining permission from Suhenphaa, settled them in different parts of the Ahom kingdom.
The Kacharis who, at that time, held a large portion of Upper Assam, obstructed the expansion of Ahom kingdom into their territory.
Suhenphaa decided to use force, and ordered one Ahom officer Chelaoseng Neog to construct a fortification at Tongsu within Kachari territory.
The commander of Ahom army, Khunlung Burhagohain managed to escape by swimming across the Dikhou river, leaving his elephants and other valuables.
He also seem to be very strict administrator, owing to which persons found guilty of criminal activities cannot escape punishment, but unfortunately this very quality of him made enemies among some influential people of the court, who then plotted his assassination.