JOLIET – The spotlight at Drew Peterson’s murder trial focused Tuesday on the bungled investigation that followed the discovery of his third wife’s body, as prosecutors sought to explain why there is no physical evidence linking the former police officer to her death.

The 58-year-old Peterson was charged in Kathleen Savio’s 2004 death only after his fourth wife, Stacy Peterson, went missing in 2007. Savio’s body was then exhumed and her death reclassified from an accident to a homicide.

Among those to take the stand Tuesday was a deputy coroner who described arriving at Savio’s home and finding investigators already drawing conclusions even though Savio’s corpse still was sprawled in her dry bathtub – her hair soaked with blood.