At least 20 people were injured after a multi-storied building under construction in Kerala's Kozhikode district collapsed on Tuesday morning. According to Police and fire rescue officials who swung into action to rescue, the accident happened when the labourers were concreting of the first floor of the building. According to preliminary reports, thirteen persons, including three with serious injuries, have been admitted at the Kozhikode Medical College Hospital. Among the injured includes a site engineer as well. Reports also suggest that most of the injured workers are from other states. More details are awaited!