Rainfall led to increase in discharge and velocity of flowing nala and also caused saturation of slope material resting on steep slope with natural drainages, which eventually resulted in slope failure by toe erosion
Nair,V,Athira., Jamir, I., 2022, Remote Sensing based Macro-scale (1:50,000) landslide susceptibility mapping in Toposheets82L/16, 82P/1,2,3,4,5,6 ; 83I/13,14 & 83M/01 covering  parts of West Siang East Siang, Upper Siang, Dibang Valley and Lower Dibang
The road running above the slide maybe at high risk
Yingkiong Slide 3
NH-513
i.  Provide 2-3 rows of Gabion wall from 1m below the road edge
i. Adverse condition of rockmass; slope material is composed of friable shale ii. Steep slope gradient iii. Hillslope dissected by drainages iv. Toe erosion by nala