Pakistan launched major operation against Islamic State along Afghan border

Pakistan’s military says it has launched a major operation against so-called Islamic State (IS) in the north-western region along the Afghan border, told BBC. 
A spokesman said militants had gained ground inside Afghanistan and had to be stopped from extending their influence, according to BBC. 

He said the “Khyber 4” operation, backed by the air force, would focus on the mountainous Rajgal Valley area in Khyber Agency.

Pakistan has previously denied the presence of IS on its territory.