Coroner: More Studies Needed in Prisoner’s DeathJuly 23, 2015 AT 7:19 PMThe coroner’s office says additional studies are needed to determine what led to the death of an inmate at the Wasco State Prison. Jailers found 56-year-old Roberto Guerrero unresponsive in his cell before 8:30 a.m. on July 18. – Anthony Pollreisz