The San Antonio Park Police Officer who was found dead in Jack White Park on the city's greenway system on the northeast side has been identified as Douglas Rivers, 63.

  Police say Rivers was bicycling in the park when he apparently lost control of his bike and slammed into a tree.

  Several passersby found Rivers' body and called police.

  Officers say the Bexar County Medical Examiner will investigate whetehr 'other factors' may have contributed to Rivers' death, but foul play is not suspect.

  Rivers was off duty at the time.