UPDATE:

GENESEE COUNTY, MI - A former Burton police sergeant admitted to abusing prescription drugs he collected from multiple area police agencies through drug take-back programs, according to police reports.

The reports allege he was also able to obtain street drugs, including heroin, crack cocaine and marijuana, from at least one of the agencies.

Police reports obtained by MLive-Flint Journal from the Michigan State Police through a Freedom of Information Act request allege Shawn Duncanson approached multiple police agencies and offered to dispose of any prescription drugs that may have been turned into their departments.

Criminal charges have not been filed against Duncanson.

A statement from the office of Genesee County Prosecutor David Leyton said the "matter remains under review."

Frank Manley, Duncanson's attorney, said he was "very proud" to represent Duncanson and commended Leyton for "wisely and compassionately resolving this matter."

"He risked his life serving his community. He considered it an honor to protect and serve as a police officer," Manley said of Duncanson. "But we are all human. Tragedy can strike us all and nobody is immune from mistakes."

Manley added Duncanson "has endured family tragedy and made some errors, but I can assure you that his mistakes were to relieve personal pain. To suggest otherwise would be incredibly wrong."

Burton Police Chief Tom Osterholzer previously told MLive-Flint Journal an investigation was launched Jan. 31 by his department after being "made aware of potential serious misconduct of one of our employees."

An investigation was launched by Michigan State Police on Feb. 1.

Duncanson was placed on administrative leave the same day, according to an incident report from Michigan State Police, and interviewed by two Burton police lieutenants.

"During the interview Sgt. Duncanson admitted to contacting other county police agencies in an attempt to collect their prescription medications. Sgt Duncanson stated he intended to start a business," the reports claim.

However, the reports show he allegedly later acknowledged to investigators he took pills collected from the departments and the Burton Senior Center as well as Vicodin -- a prescription opiate -- from evidence for his own personal use.

Duncanson denied to investigators that he sold or gave away any of the pills he collected.

A countywide email was sent out in early February to local police agencies to determine who Duncanson had reached out to regarding collection and disposal of prescription drugs.

Police departments in Clio, Davison Township, Fenton, Flint Township, Genesee Township, Grand Blanc Township, Mundy Township, the Genesee County Sheriff's Office and Baker College Public Safety responded they'd been contacted by Duncanson.

The reports show the sheriff's office also turned over street drugs to Duncanson on the belief that he was taking them for destruction. Drugs allegedly turned over included roughly 1.5 kilograms of marijuana, 78 oxycodone pills, five grams of hallucinogenic mushrooms and various quantities of heroin, crack and powder cocaine.

Duncanson often made the collections while in uniform or while driving a Burton police cruiser, the reports claim.

Honored in May 2011 for his work as a detective that led to a conviction of a suspect in a series of sexual assaults, Duncanson was suspended without pay March 27 as the investigation continued.

He made the move to resign June 2, just days prior to a June 5 discipline hearing in front of the Burton police chief and the city's labor attorney, Osterholzer previously said.