The Taliban government has confirmed carrying out "retaliatory operations" against Pakistani troops in multiple mountainous locations on the northern border.
Casualties are not yet clear, but the attacks were in response to alleged violations of Afghan airspace by Pakistan, including the bombing of a market inside the border on Thursday.
Pakistan's Interior Minister Mohsin Naqvi said the Afghan attacks were "unprovoked" and civilians were fired at, warning that his country's forces would respond "with a stone for every brick".
Author's summary: Taliban confirms retaliatory attacks on Pakistan border.