New Delhi: Chief Minister Rekha Gupta on Sunday visited the site of a building collapse in south Delhi's Saket, as the government ordered a magisterial inquiry and registered a criminal case into the incident.The FIR has been lodged at Mehrauli Police station, while the inquiry will be conducted under the supervision of the South District Magistrate on the the chief minister's directions.Four persons were killed and eight others were rescued after a three-storey commercial building collapsed near the Saket Metro station on Saturday.During her visit, the chief minister reviewed the ongoing relief and rescue efforts and directed officials to ensure all necessary assistance to those affected.Locals claimed that more people could still be trapped under the debris of the collapsed building. Gupta said search operations were being carried out carefully by the concerned agencies.Residents also raised concerns over rampant unauthorised construction and inadequate safety measures in several buildings in the area."Action will be taken against all unauthorised buildings and the officers responsible for them," the chief minister said.Gupta further directed officials to inspect dilapidated and hazardous buildings in the vicinity and to take strict action wherever necessary.Delhi Lieutenant Governor Taranjit Singh Sandhu in a post on X said that multi-agency search and rescue operations were continuing and instructions had been issued to ensure all necessary medical assistance and immediate relief for those affected.Delhi Home Minister Ashish Sood said rescue operations were being conducted on an urgent footing, with all agencies working in close coordination to safely evacuate anyone trapped and provide immediate assistance to affected families."Every available resource has been deployed, and efforts are continuing without interruption," he said.He added that the situation was being closely monitored, and that the administration remained committed to providing timely relief, support and all necessary assistance. PTI