A team of international experts, including two soil experts and one tunnel expert, along with officials of Kolkata Metro Railway Corporation Limited visited the affected area of Bowbazar.

The experts inspected the crumbling structures and the tunnel below the the ground where grouting was carried out extensively. A three-level barricading is being carried out inside the tunnel below the affected area.

According to sources in KMRCL, the experts have said that the method adopted for stopping the water flow is correct; however, there is a need to increase the speed.

Following the advice, the different measures taken to prevent the water flow, particularly the process of grouting, are being carried out on war footing. And even as grouting continued on a large scale in the tunnel, on the ground above, portions of several buildings collapsed while new cracks and crevices appeared in some more buildings for the fourth day.

Meanwhile, the evacuees of the affected stretch, who had been demanding they should be allowed into their abandoned crumbling homes to get their belongings, were allowed to enter their premises.

Accompanied by police and KMRCL staff, one member of each family was allowed to collect their valuables from his or her house within 10 minutes.

While some family heaved a sigh of relief after being able to get back their valuable belongings, others were grieved to find no traces of their important documents, jewellery, money and other things.

A woman fell unconscious and had to be admitted to the Calcutta Medical College and Hospital after she found her home reduced to debris and was unable to get inside.