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DES MOINES, Iowa — Multiple law enforcement agencies worked together early Wednesday morning on a large-scale operation around the Des Moines metro, serving 43 search warrants in connection with a nearly year-long criminal investigation.

A statement from the office of the U.S. Attorney’s Office of the Southern District o Iowa says federal search warrants were served at addresses in Des Moines, Windsor Heights, Clive, Waukee, West Des Moines, and Adel.

Search warrants were executed at these addresses:

• 2000 block of Lay Street, Des Moines
• 1100 block of 21st Street, Des Moines
• 3000 block of Woodland Avenue, Des Moines
• 2400 block of Prospect Road, Des Moines
• 2200 block of Forest Avenue, Des Moines
• 1800 block of Glenbrook Drive, Des Moines
• 900 block of East Ovid Avenue, Des Moines
• 2300 block of East 39th Street, Des Moines
• 1100 block of 19th Street, Des Moines
• 100 block of Loomis Avenue, Des Moines
• 800 block of Payton Avenue, Des Moines
• 1600 block of Des Moines Street, Des Moines
• 1600 block of Hull Avenue, Des Moines
• 900 block of East Lacona Avenue, Des Moines
• 2100 block of East 13th Street, Des Moines
• 1500 block of University Avenue, Des Moines
• 2800 block of Fleur Drive, Des Moines
• 2200 block of 68th Street, Windsor Heights
• 500 block of Grandview Avenue, Des Moines
• 700 block of 13th Street, West Des Moines
• 1900 block of Martin Luther King, Jr. Parkway, Des Moines
• 2900 block of East 36th Street, Des Moines
• 4600 block of Hubbell Avenue, Des Moines
• 6500 block of Chaffee Road, Des Moines
• 2600 block of Northwest 165th Lane, Clive
• 500 block of Pleasant View Drive, Des Moines
• 2600 block of East Sheridan Avenue, Des Moines
• 2000 block of 63rd Street, Windsor Heights
• 1500 block of 20th Place, Des Moines
• 700 block of 27th Street, Des Moines
• 3000 block of Southeast 19th Street, Des Moines
• 6200 block of Southeast 5th Street, Des Moines
• 1500 block of 13th Street, Des Moines
• 1400 block of Merle Hay Road, Des Moines
• 3200 block of Cornell Street, Des Moines
• 1100 block of Clark Street, Des Moines
• 1000 block of 13th Street, Des Moines
• 2400 block of Hickman Road, Des Moines
• 1900 block of King Avenue, Des Moines
• 1400 block of Richmond Avenue, Des Moines
• 200 block of East Edison Avenue, Des Moines
• 600 block of 2nd Street, Waukee
• 1500 block of Greene Street, Adel

Information about the investigation was not released but the statement says the following agencies were involved in Wednesday’s operation: Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF); Des Moines Police Department (DMPD); Iowa Division of Narcotics Enforcement (DNE); Iowa State Patrol (ISP); Mid-Iowa Narcotics Enforcement Task Force (MINE); Tri-County Task Force; Central Iowa Drug Task Force (CIDTF); Mid-Iowa Drug Task Force (MIDTF); Iowa Department of Criminal Investigation (DCI); Federal Bureau of Investigation (FBI); Internal Revenue Service – Criminal Investigations (IRS-CI); Homeland Security Investigations (HIS); Altoona Police Department; West Des Moines Police Department; Urbandale Police Department; Marshalltown Police Department; Dallas County Sheriff’s Office; and Iowa State Fire Marshal.

Sgt. Paul Parizek with the Des Moines Police Department says this is the largest operation anyone can remember DMPD being a part of.

More information on the investigation and Wednesday’s operation is expected to be released later in the morning.