Two former high-ranking law enforcement officers in Lake County, Illinois are now teaching police to be "lead homicide investigators," even though both men have been called out for questionable interrogation tactics.

In 1992, Former Waukegan police detective Lou Tessmann took a confession from Juan Rivera that he raped and murdered 11-year-old Holly Staker. Rivera was subsequently tried three times and imprisoned for almost 20 years before DNA evidence revealed that another man was the attacker.

For 15 years, Jeffrey Pavletic was the number-two man at the Lake County State's Attorney's office. In 2005, he oversaw the interrogation in which Jerry Hobbs confessed to raping and murdering his 8-year-old daughter Laura and killing her friend, 9-year-old Krystal Tobias, at a park in Zion. Two years later, DNA evidence suggested that Hobbs wasn't his daughter's attacker. Charges against Hobbs were dropped in 2010.

A Chicago Tribune investigation finds, since 2007, more than $300,000 of Illinois taxpayer money has been used to pay for police officer training by either Tessmann or Pavletic.

Neither Tessman not Pavletic will comment.

Read the Chicago Tribune's full report on chicagotribune.com.