File - In this Nov. 29, 2011 file photo, Oakland Police Chief Howard Jordan speaks at a news conference at Oakland Police headquarters in Oakland, Calif. The chief of Oakland's embattled police department is stepping down. Jordan said in a statement Wednesday, May 8, 2013, that he advised the city administrator effective immediately that he is on medical leave and is taking steps toward medical retirement. (AP Photo/Paul Sakuma, file)

Associated Press
File - In this Nov. 29, 2011 file photo, Oakland Police Chief Howard Jordan speaks at a news conference at Oakland Police headquarters in Oakland, Calif. The chief of Oakland's embattled police department is stepping down. Jordan said in a statement Wednesday, May 8, 2013,  that he advised the city administrator effective immediately that he is on medical leave and is taking steps toward medical retirement. (AP Photo/Paul Sakuma, file)
File - In this Nov. 29, 2011 file photo, Oakland Police Chief Howard Jordan speaks at a news conference at Oakland Police headquarters in Oakland, Calif. The chief of Oakland's embattled police department is stepping down. Jordan said in a statement Wednesday, May 8, 2013, that he advised the city administrator effective immediately that he is on medical leave and is taking steps toward medical retirement. (AP Photo/Paul Sakuma, file)