HOUSTON --The Port of Houston has been put on notice to not get rid of documents created since 2008, and its chairman also announced he's ended his controversial contract with a port vendor. It was the first salvo in a sweeping investigation of port procurement, conflicts of interest, ethics policies and compliance with state open meeting laws. Among the documents being sought are logs of the Sam Houston tours, personnel files of former PR Director Argentina James, and minutes of the port's executive sessions. You can read the letter here. Meanwhile, Port of Houston Chairman Jim Edmonds says he's ended a controversial consulting contract after ultimatums from mayor and county judge. Late Wednesday night, he issued the following statement regarding his connection to a port vendor: "My AECOM contract was for a specified time period and has ended. My dedication and service to the Port of Houston Authority is of the utmost importance to me and I look forward to continuing the effort of growing the Port of Houston and generating 785,000 jobs to this region." Stay with Eyewitness News for the latest updates on this developing story.