A federal program in Canada to reduce harmful emissions from large trucks – partly by reducing idling – is now embroiled in controversy.

According to media reports, Natural Resources Canada, the group that administers the program, has ordered a new round of internal audits of the $32 million grant project.

Meanwhile, the program director has been fired and at least one grant agreement has been cancelled.

The agency says it has new procedures in place for issuing grants in the future.