Mark Rochester, an assistant managing editor at The Denver Post, has been named assistant chief of bureau for The Associated Press in San Francisco. The appointment was announced Wednesday by John Raess, chief of bureau for Northern California, Northern Nevada and Hawaii. Rochester, 42, was put in charge of the Post’s Sunday edition in 2002. He also has supervised national and international reporting desks, as well as investigative projects. He coordinated coverage of the war in Iraq, the space shuttle Columbia disaster and investigations into sexual assaults in the military. Previously, Rochester worked as enterprise editor at Newsday and as an assistant managing editor for investigations and special projects at The Indianapolis Star. He also worked as a reporter at The Milwaukee Journal, The Grand Rapids (Mich.) Press, and the Lafayette (Ind.) Journal and Courier. Rochester has served on the board of directors for Investigative Reporters & Editors Inc. He is a journalism graduate of Indiana University.