The Bhandarkhal massacre (Nepali: भण्डारखाल पर्व) was a political massacre that occurred in Bhandarkhal garden of Hanuman Dhoka, Kathmandu in 1806. The chief perpetrator of the massacre was then Kaji Bhimsen Thapa. Bhimsen instigated the massacre as investigation and trial upon the death of then reigning Mukhtiyar and former King Rana Bahadur Shah. It began when Tribhuvan Khawas (Pradhan), a member of Sher Bahadur's faction, was imprisoned on the re-opened charges of conspiracy with the British that led to Knox's mission and finally convicted with a death penalty on the charge of treason. After the implication, Tribhuvan decided to reveal everyone that was involved in the dialogue with the British on his house meeting on the night of 25 April 1806. The confession implicated Sher Bahadur Sh