ATLANTA (AP) — A former official with Atlanta's transit system has been sentenced to federal prison for a false invoicing scheme.

The U.S. attorney's office in Atlanta said in a news release Tuesday that former Metropolitan Atlanta Rapid Transit Authority senior director of operations Joseph Erves has been sentenced to serve two years and nine months and ordered to pay $522,825 in restitution.

Prosecutors say the scheme he orchestrated led to MARTA paying more than $500,000 for maintenance work that was never done.

Prosecutors say that from June 2010 to December 2016 Erves had fake invoices prepared for three vendors for more than 40 maintenance projects. He then authorized payment of the invoices, knowing no work was done. After receiving payment, the vendors funneled most of the money into Erves' personal bank accounts.