The honorific titleMirza was added before his name and Baig as a suffix. This was the historicalnaming convention for the descendants of the Mughal dynasty. The Mughal Empire was defeated by the East India Company in the Battle of Plassey of 1757, and an anti-British sentiment was common among the natives of the Indian subcontinent and especially those related to and being descended from the noble dynasty such as Reza. His parents were Iranians and he was a follower of Shia Islam. Reza was from the Sylhet region. The Collector of Sylhet in the late 18th century, Robert Lindsay, described the Sylhet region as a "hotbed of resistance". Claiming to be a Sufi saint, Reza gained the support of thousands of peasants, fakirs and ryots. It is said he also gained support from Shams ud-Daulah, the Naib Nazim of Dhaka. He made an announcement calling for jihad against the British, who he preached were the reasons of the problems that the peasants were facing. In 1799, Reza invaded the Kachari Kingdom, which was referred to as his "hijrat", in order to gain a larger following before facing the British in a war. He claimed to be the Mahdi, twelfth imam, promising to free the peasants from oppression. By making a deal with the Nagas and Kukis who were allied with the Kachari Raja, he was able to convince them to join his side. Reza's force proceeded to defeat all the barqandaz sent by the Raja of the Kachari Kingdom, and expelled the King, Raja Krishnachandra Narayan at Khaspur to the nearby hills. After taking over the throne, many Bengali Hindus converted and gave allegiance to him. Here, Reza declared independence of Sylhet from the British. He also invited zamindars and other landowners to join him in his mission, promising them more land if they can liberate their country from the British. He then ordered his followers not to pay their taxes to the Company. Following this, Reza sent 1,200 men to attack the nearby Bondassye thana of the East India Company, administered by a havildar and his eight sepoys. He is also said to have attacked the Badarpur Fort. The Kachari army then arrived with 300 men and two grasshopper cannons but were defeated by Reza's forces. During this time, the British were able to gain a reinforcement of 70 sepoys. The army ended up in a brawl between the Kacharis, and the British sepoys eventually drove both groups back leading to 90 deaths in the Kachari side. Reza escaped but was later arrested on 14 July being sent to a prison in Calcutta. He was given lifetime imprisonment for his crimes.
