QUETTA - Unknown assailants gunned down a man here on Sunday, according to police. Attackers opened indiscriminate fire on Ghulam Nabi Hassani on Double Road, injuring Ghulam Nabi critically, said the police, adding that, he was rushed to hospital but he die on the way. Police said that investigations were underway. The motive behind the killing could be enmity, added the police. Police handed over the body to heirs after completing legal formalities.