Unidentified gunmen kill at least 21 coal miners in Pakistan

QUETTA, Pakistan (Reuters) -Unidentified gunmen attacked a cluster of small private coal mines in southwestern Pakistan early on Friday, shooting some miners as they slept and lining up others before opening fire, killing 21 in the restive region, police said.

The attack by 40 armed men days before Pakistan hosts a summit of the Shanghai Co-operation Organization grouping is the worst in weeks in the mineral-rich province of Balochistan bordering Afghanistan and Iran.