Jelep La was in use from early times as trade flourished between India and Tibet. After the appropriation of India by the British, the latter started to construct roads into Sikkim around 1884. This was viewed with some apprehension among the Tibetans and in 1886 a small Tibetan militia occupied the region around the pass. In May 1888, they attacked the British but were warded off by a British Expeditionary Force. Later in September the same year the British regained control of the area around the pass.