A team of Dutch and OSCE rescue workers have started securing the site in Ukraine where a passenger plane was brought down earlier this year.<br /><br />Flight MH17 was downed over a war zone in the east where pro-Russian rebels are fighting Kyiv government forces. <br /><br />All passengers and crew – most of them Dutch – were killed.<br /><br />Retrieving the wreckage has been delayed for months because of fighting on the ground.<br /><br />Rebel officials were expected to provide the equipment needed to start lifting large pieces of debris.<br /><br />But that did not happen on Tuesday, causing further delays.<br /><br />The rescue team instead secured several zones around the crash site with warning signs.<br /><br />Dutch officials are conducting two investigations: one into the cause of the crash, and a criminal inquiry. <br /><br />But no forensic investigators have made it to the crash site. And that makes recovering evidence nearly impossible.