Deploring the arrest of Deputy Consul General in New York, Foreign Secretary Sujatha Singh today summoned US Ambassador Nancy Powell to convey India's "shock" over "absolutely unacceptable" treatment meted out to the senior Indian diplomat.

Reacting strongly to Deputy Consul General Devyani Khobragade being arrested and handcuffed in public on visa fraud charges, the Foreign Secretary summoned Powell to South Block to lodge strong protest and convey India's displeasure over the arrest of its diplomat.

According to sources, Singh told Powell that the treatment meted out to the senior diplomat was "totally unacceptable" and she was entitled to the courtesies under various multilateral conventions dealing with diplomatic fraternity posted in foreign countries.

In a major diplomatic embarrassment, Khobragade, 39, was taken into custody on a street in New York as she was dropping her daughter to school at 9 am yesterday and handcuffed in public on visa fraud charges before being released on a USD 250,000 bond after pleading not guilty in court.

"We are shocked and appalled at the manner in which she has been humiliated by the US authorities. We have taken it up forcefully with the US government through our embassy in Washington. We are also reiterating, in no uncertain terms, to US embassy here that this kind of treatment to one of our diplomats is absolutely unacceptable," Spokesperson in the Ministry of External Affairs Syed Akabaruddin said here.