Amritsar: An old dispute over a gold transaction turned fatal in Amritsar on Diwali night, leaving one man dead and a police officer injured after gunfire broke out between two groups.The deceased was identified as Pratap Singh, who died after sustaining bullet wounds to his chest and arm. Assistant sub-inspector (ASI) Harnek Singh of the local B Division police station was hospitalised with two bullet injuries to his leg after being caught in the crossfire upon arriving at the site.According to police, the clash erupted between four friends after negotiations to settle a dispute over unreturned gold broke down. Pratap Singh had allegedly given the gold to the other party, comprising two brothers.Additional deputy commissioner of police (City-3) Manmohan Singh Aulakh said as soon as ASI Harnek Singh along with his team reached the spot to investigate a complaint, firing broke out.Police have arrested two suspects and recovered two fi