LANSING, Mich. -

Michigan is seeking civil subpoenas against a propane company and its affiliate following consumer complaints tied to pricing.

Michigan Attorney General Bill Schuette filed a petition for the subpoenas Wednesday in Saginaw County Circuit Court.

Schuette's office says it has received 65 complaints against Ferrellgas and Best Propane. It says the complaints include allegations of excessive pricing and price misrepresentation to consumers.

The subpoenas are part of Schuette's investigation into propane pricing this winter.

Schuette's office says some customers may have been charged more than $8 per gallon for propane while the statewide average retail price was as high as $3.76 last month.

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The Associated Press left phone messages late Wednesday afternoon seeking comment from Overland Park, Kan.-based Ferrellgas and Battle Creek-based Best Propane.