A submarine cable fault on Tuesday has affected the internet speed in Pakistan.

The fault has affected the internet speed by 1 terabyte in the country after which the Pakistan Telecommunication Authority (PTA) has started to shift internet traffic to other cables.

Southeast Asia–Middle East–Western Europe 4 (SEA-ME-WE 4) is an optical fibre submarine communications cable system that carries telecommunications between Singapore, Malaysia, Thailand, Bangladesh, India, Sri Lanka, Pakistan, United Arab Emirates, Saudi Arabia, Sudan, Egypt, Italy, Tunisia, Algeria and France.