ZAGREB, Jan 31 (Hina) - Croatian Railways (HZ) said on Sunday the information from a report by a commission investigating a December 21, 2009 train accident at Zagreb's Central Station, published in some media, was unofficial and incomplete. A police investigation into the accident, which happened when a train arriving from Sisak hit a guardrail, is still under way and the commission's findings must not be published before its completion, HZ said.