( CNN ) -- The death toll in India in two building collapses in different cities climbed to at least 11 , with more victims trapped in the rubble , Indian officials confirmed Saturday . A crumbling and rundown four-story building in New Delhi toppled over Saturday morning . `` Ten people , including five children and three women , died , '' Deputy Commissioner of Police Madhur Verma said . Two others were also injured , he added . The building was around 50 years old and housed several families . Rescue efforts were hampered by cranes in the area . Officials suspects construction work at an adjoining building could be to blame . A second building also collapsed Saturday in Tamil Nadu state . An 11-story structure under construction in the capital city of Chennai toppled over , killing at least one person . Eleven have been rescued from under the debris . `` Fifty workers were believed to be present at the construction site at the time of collapse . Rescue operations are still on , '' said Chennai Police Commissioner Sebastian George . The collapse in Chennai came amid heavy rains . Unfortunately , building collapses in India are an all too common occurrence . An official with the New Delhi Municipal Council told CNN many of the incidents are because of unauthorized construction . People build extra floors in structures without permits , creating hazardous conditions . The official also said there have been several buildings in Delhi designated as dangerous , yet people continue to live in them . Corruption is also a problem , which leads to the authorization of risky building permits . Other factors that contribute to the high number of building collapses in India include lack of oversight , poor quality building materials and even overpopulation . A building collapse in January in the tourist resort of Goa claimed at least 14 lives . Hundreds of people have died in building collapses in India over the past several years . Kay Guerrero , Ravi Agrawal , and Neha Sharma contributed to this report .
Almost a dozen killed in two building collapses in India . A crumbling four-story building falls in New Delhi , killing 10 people . An 11-story structure topples in Chennai , killing one and trapping as many as 50 . Unauthorized permits , shoddy construction among factors in collapses .