Illegal Mexican farm laborer accused of murdering Iowa jogger Mollie Tibbetts now claims his confession was coerced because he was questioned after working 12-hour shift 'scooping poop'
Cristhian Bahena Rivera's lawyer Jennifer Frese said authorities conducted an incomplete investigation into 20-year-old Tibbetts' death in July 2018
His defense began Tuesday by questioning the confession and DNA evidence
Frese told jurors: 'He wasn't in an interview; he was in an interrogation'
Bahena Rivera´s defense described him as a hard-working, family-centered immigrant from Mexico who was pressured into making a false confession
They also kept working to raise suspicion about Tibbetts´ boyfriend, Dalton Jack, who testified again Tuesday about their up-and-down relationship