Rescuers are facing some technical issues on Sunday as they as are "quite close" to reaching where two-year-old boy has been stuck in a 150-foot-deep borewell in Punjab's Sangrur district for past three days, officials said.

The child, Fatehvir, fell into the unused borewell in a field when he was playing near his house around 4 pm on Thursday. The seven-inch-wide borewell was covered with a cloth and the boy accidentally stepped on it. His mother tried to rescue him, but failed, officials said.

The rescue operation has been going on for the last 78 hours. "We are quite close to reaching the child. We were hoping to complete the operation during the day, but we are facing some technical issues and hopefully these will be overcome," district Deputy Commissioner Ganshyam Thori said in the evening.

No food could be provided to the child, who has been unconscious after he fell into the borewell, Thori said, adding that oxygen was being supplied to him. On Saturday morning, officials, who were monitoring the boy's condition through camera, had said some movements of the child were noticed.

Thori, who is supervising the rescue operation, described it as the "rarest of the rare", and said it was quite challenging as there were a lot of technicalities involved.

The National Disaster Response Force (NDRF) has also deputed an officer who specialises in operations to rescue children stuck in borewells, the official said earlier in the day.

The toddler is stuck at a depth of 125 feet, and an NDRF team, assisted by police, civil authorities, villagers and volunteers, are carrying out the rescue operation. Some volunteers from Dera Sacha Sauda sect, too, were helping in the rescue operations, one of the volunteers said.

To retrieve Fatehvir, a parallel borewell has been dug by installing reinforced cement concrete (RCC) pipes of nearly 36 inches in diameter. However, as rescuers were close to reaching the child, they were facing some technical issues. In the early hours of Sunday, the rescuers also faced some issues in the parallel borewell.

"Nowhere in the world has such an operation been carried out where a child is stuck at such a depth in a borewell.