Oklahoma City investigators have found no evidence that Aubrey McClendon committed suicide when he died in a one-vehicle crash in March (see Shale Daily, March 2). The chairman of American Energy Partners LP and the former CEO of Chesapeake Energy Corp. died one day after he was indicted by a federal grand jury on bid-rigging charges. Interviews and a review of emails and mobile phone record concluded that McClendon's death was not a homicide. An investigation by the Oklahoma medical examiner found no alcohol in his system. A final crash report in March showed that McClendon, 56, made no serious attempt to slow the 2013 Chevrolet Tahoe he was driving, which slammed into a concrete embankment at 78 mph.