News agency ANI just reported that
four sanitation workers on Saturday fell into a septic tank in Ghitorni and that rescue operations are currently underway.
The Hindu had recently reported that, around 250 sanitation workers in the capital get inside storm water drains and sewer lines to clean them. The report further added that the men mostly worked without any safety gear. This is in the era of the Swacch Bharat Abhiyan for which all Indians are compolsarily paying a tax.
More details awaited.