By Rich McKay (Reuters) – Texas investigators on Wednesday were looking to find out why a man went on a shooting rampage that left six people dead and three others wounded a day earlier, and ended when the suspect was captured after a shootout in Austin. Shane James, 34, was charged early on Wednesday with four counts of capital murder and held without bond, according to records at the Travis County jail. No other charges were immediately listed, but interim Austin Police Chief Robin Henderson said at a press conference that more charges were pending and that James was connected to all the sho…