The arrest and alleged strip search of an Indian diplomat in New York City escalated into a major diplomatic furor Tuesday as India’s national security adviser called the woman’s treatment “despicable and barbaric.”

Devyani Khobragade, India’s deputy consul general in New York, is accused of submitting false documents to obtain a work visa for her Manhattan housekeeper. Indian officials said she was arrested and handcuffed Thursday as she dropped off her daughter at school, and was kept in a cell with drug addicts before posting $250,000 bail.

A senior Indian official confirmed reports that she also was strip-searched, which has been portrayed in India as the most offensive and troubling part of the arrest.

Her U.S. attorney said he didn’t know if she was strip-searched. Federal authorities said they were looking into the arrest.

“We understand that this is a sensitive issue for many in India,” said Marie Harf, State Department deputy spokeswoman. “Accordingly, we are looking into the intake procedures surrounding this arrest to ensure that all appropriate procedures were followed and every opportunity for courtesy was extended.”

Harf said that federal authorities would work on the issue with India “in the spirit of partnership and cooperation that marks our broad bilateral relationship.”

“We certainly don’t want this to affect the relationship,” she said.

India was ready to retaliate against American diplomats in India by threatening to downgrade privileges and demanding information about how much they pay their Indian household staff, according to the Press Trust of India news agency.

Police also removed the traffic barricades near the U.S. Embassy in New Delhi, a demand by the Indian government in retaliation for Khobragade’s treatment, PTI reported. The barriers were a safety measure.

“We got orders to remove the concrete barriers,” said Amardeep Sehgal, station house officer of the Chanakyapuri police station, the one nearest the embassy. “They were obstructing traffic on the road.” He refused to say who had given the orders.

Calls to the U.S. Embassy were not immediately returned Tuesday.

But Harf said the U.S. had made clear to the India government that it needs to uphold its obligations under the Vienna Conventions on diplomatic and consular relations. She said the U.S. takes the safety and security of its diplomats very seriously.

National Security Adviser Shivshankar Menon slammed Khobragade’s treatment in New York.

“It is despicable and barbaric,” he said.

Prosecutors in New York say Khobragade, 39, claimed she paid her Indian maid $4,500 per month but actually paid her less than the U.S. minimum wage. In order for diplomats and consular officers to get a visa for their personal employees, known as an A-3 visa, they must show proof that the applicant will receive a fair wage, comparable to employment in the U.S., U.S. Attorney Preet Bharara said in a statement last week.

Federal prosecutors say Khobragade told the housekeeper she would be paid 30,000 rupees per month — about $573, or $3.31 per hour. The woman worked for the family from about November 2012 through June 2013, and said she worked far more than 40 hours per week and was paid even less than 30,000 rupees, prosecutors said.

Khobragade has pleaded not guilty and plans to challenge the arrest on grounds of diplomatic immunity, her lawyer said last week.

If convicted, Khobragade faces a maximum sentence of 10 years for visa fraud and five years for making a false declaration. She was arrested outside of her daughter’s Manhattan school.