Pakistan's army said on Saturday that four of its border patrol soldiers had been killed by a group operating from Iran, in an attack which was condemned by Prime Minister Shehbaz Sharif.
A separatist group, Baluch Liberation Army (BLA), which has previously been involved in attacks on Pakistani security forces and Chinese interests in the region, claimed responsibility in an emailed statement.
Insurgent ethnic Baluch nationalist groups, which operate on both sides of the border, have been fighting for decades for a greater share of regional resources.
