Defence sources confirmed the Army chief's visit and said he left afterwards.
Six Assam Rifles personnel, including a junior commissioned officer, were killed in the ambush by heavily-armed militants on May 22 at Joupi Hengshi near Indo-Myanmar border.
The personnel were ambushed when they were returning after inspecting a landslide site in the interior tribal district.
The slain personnel belonged to 29 Assam Rifles and CorCom, an umbrella body of the valley insurgent groups, has claimed responsibility for the ambush.
Search was on in the jungles to apprehend the militants behind the attack, he had said.