Daniel Arshack, Khobragade's lawyer, said Mark Smith, the Diplomatic Security Services agent handled the investigation and arrest of Khobragade and drew up and swore to the accuracy of the formal complaint in the case.
Smith "simply made an error in reading the DS-160 form which supported the visa application for the domestic worker, Sangeeta Richard," Arshack told PTI.
"He erroneously and disastrously believed that the USD 4,500 per month salary entry on the form was Richard's expected salary when, in fact, it was clearly a reporting of the base salary to be earned by the employer, Khobragade, in the US," he said.
It was submitted so that US Embassy officials in New Delhi could determine that Khobragade would be earning enough money to afford to pay Richard the USD 1,560 per month (9.75/hour for 40 hours a week) which had been agreed to according to the contract between Richard and Khobragade.
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"Somebody who messes up on the paperwork and causes a terrible thing to occur is very very serious," he said.
"We can confirm that the United Nations has processed this request per its standard procedures," she said.
Khobragade was arrested on December 12 on charges of making false declarations in a visa application for her maid Richard. She was released on a USD 250,000 bond after being charged with visa fraud.
Subsequent revelations that she was strip searched and held with criminals triggered a row between the two sides.