He was found trespassing Mount Rinjani, as the local authorities has closed the area following a volcanic eruption in September.
The two foreign hikers left from Malang to climb Mt. Semeru on June 3. They went to Ranupani village in Lumajang regency and after taking a short break they started to climb the mountain. However, they did not report their plans or route to the Ranupani post of the Bromo Tengger Semeru National Park Agency (TNBTS).