"This is a case which can be quashed under merit... This act of re-indicting Devyani for the same charges is nothing but an act of aggression," he said.
"The Indian government has been taking the stand that this is a political case and this action of the prosecutor establishes that this is a political case," Khobragade added.
Asked if the re-indictment would lead to another diplomatic row between India and the USA, Khobragade said "this act is nothing short of an aggression against India."
The new charges, which came a day after a US court dismissed an earlier indictment, accused Devyani of visa fraud and making false statements about the visa application of her maid Sangeeta Richard.