Probe found California officers violated policy in arrest leading to homeless man's 2011 death

An internal report found that two Fullerton, California, police officers who were acquitted of criminal wrongdoing in the death of a mentally ill homeless man in 2011 violated their department's use-of-force policy.

The report was not presented to the jury because of state laws protecting the confidentiality of peace officers' disciplinary records.

Kelly Thomas died after a violent struggle with Fullerton Police Department officers in July 2011.

The 2012 report came to light recently after it was included in a legal filing in a wrongful-death lawsuit brought by Thomas' father against the city, the Police Department and others. That trial is slated for later this month.

A 33-minute surveillance video shows the officers hitting, kneeing and firing an electric stun gun at Thomas as he cries out for his father.