Investigators with the Illinois State Police say there's no evidence of misconduct, after a man died while in Granite City police custody. State Police determined the man died of natural causes, after the coroner revealed he suffered a heart attack and a stroke. Fifty-six-year-old Shannon Walsh Senior died last week, after he was taken into custody for traffic offenses.

The autopsy showed Walsh died January 24 of natural causes. Toxicology test results are pending an an inquest will follow once the results are returned. Walsh was taken into custody in Granite City, and investigators say he was treated properly by authorities before he collapsed at the station. He died five days after the arrest. Family members say they still have questions about how he was treated and the medical care that was provided to him by officials in Granite City and have hired an attorney to help find answers.

(Copyright WBGZ Radio/