Horror as landlord, 74, "shoots dead two tenants" after dispute over parking cars in the driveway… just three minutes after police left…

Horror as landlord, 74, 'shoots dead two tenants' after dispute over parking cars in the driveway… just THREE MINUTES after police left the homePolice say James Pak shot three of his tenants after arguing with them on Saturday afternoonDerrick Thompson, 19, and his girlfriend Alivia Welch, 18, were killed; Thompson's mother Susan Johnson, 44, was wounded Police had been called to the home Saturday after an argument over parking turned physicalThe shooting occurred three minutes after they left the house | UPDATED: 21:08 GMT, 30 December 2012 A young couple was shot dead by their landlord after arguing with him over parking their cars in his driveway, police say