On 4 April 2013, a building collapsed on tribal land in Mumbra, a suburb of Thane in Maharashtra, India. It has been called the worst building collapse in the area. Seventy-four people (18 children, 33 men and 23 women) were killed, while more than 100 survived. The search for additional survivors ended on 6 April 2013.
The building was under construction and did not have an occupancy certificate for its 100 to 150 low- to middle-income residents. Living in the building were the site construction workers and families.