At least 37 people have been killed and over 25 injured in violent clashes between Sunni and Shia Muslims in northwest Pakistan. The violence erupted following an attack on Shia motorists that left 42 dead. Armed groups set fire to shops, homes, and government buildings as fighting continues in the region, leading to school closures. Authorities are seeking to mediate between the rival groups to establish a ceasefire amid ongoing tensions that have persisted for months, with similar conflicts resulting in numerous fatalities in the past.