The mishap, which occurred in  Bhara Kahu area of the city, also left three others hurt.

According to a tweet by the police, two labourers were taken to the Pakistan Institute of Medical Sciences, where one succumbed to injuries. Three other labourers were taken to Polyclinic Hospital where one could not survive as well, reports Dawn News.

It added that senior officials of the police and administration — including Islamabad Inspector General (IG) Dr Akbar Nasir and Chief Commissioner Noorul Amin Mengal — were present at the incident site.

In a separate tweet, it said a committee, which will be headed by Islamabad Deputy Commissioner Irfan Nawaz Memon, has been constituted to “review all aspects related to the incident”.