BALTIMORE — Five Baltimore workers and six commercial trash haulers have been indicted in two alleged years-long schemes involving bribes and thefts to defraud the city.

A federal grand jury returned the indictments, which were unsealed Tuesday, on May 28.

One indictment charges that commercial trash haulers paid bribes to landfill employees in exchange for not charging dumping fees. Prosecutors say the alleged scheme lasted for 14 years and involved Department of Public Works employees. Authorities say Baltimore lost nearly $6 million in dumping fees in this alleged plot.

The second indictment claims that landfill employees stole and sold scrap metal dumped at Baltimore trash collection sites.

“They took it to private salvage companies in their own vehicles and sold it during working hours when they were billing the city for their work time,” says Rod Rosenstein, a U.S. attorney.

Prosecutors say this alleged scheme cost the city $1 million over nine years.

A worker who saw what was going on came forward, leading to an investigation into both schemes.

“This case represents the culmination of a three-year investigation and is a prime example of the impact these partnerships can bring,” said Robert Pearre, Baltimore’s inspector general.

Next month, Perry is bringing in an audit manager to try to prevent such schemes from taking place.

Rosenstein says they believe more culprits are out there.

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WNEW Annapolis Bureau Chief Karen Adams contributed to this report. Follow her and WNEW on Twitter.