There was a presence of Sikhism in Sylhet Division after Guru Nanak's visit in 1508. Kahn Singh Nabha has stated that in memory of Nanak's visit, "Gurdwara Sahib Sylhet" was established. This Gurdwara was visited twice by Tegh Bahadur and many hukamnamas were issued to this temple by Guru Gobind Singh. In 1897, the gurdwara fell down after the earthquake. Nearly all the Sikhs of Sylhet in the early 18th century were found in North Cachar where they used to work for the Assam Bengal Railway. There are around 1 lakh Bengali people who follow Sikhism as their religion in both West Bengal and Bangladesh.