New Delhi: In an embarrassment for the Indian government, the Central Bureau of Investigation (CBI) drew flak on Thursday after its team landed in Copenhagen to seek extradition of Kim Davy with an expired warrant. Davy is the main accused in the 1995 Purulia arms drop case.

Terming the goof-up as an 'oversight', a CBI official said that the agency has now sought revalidation of the warrant, which will be extended till Aug 20. The warrant expired in January.

Communist Party of India-Marxist (CPI-M) leader Sitaram Yechury, criticising the CBI, said they have a 'lackadaisical approach' in seeking the extradition of Davy, accused of dropping a cache of arms in West Bengal's Purulia district from an An-26 aircraft Dec 17, 1995.

'CBI must immediately change its lackadaisical approach. They must correct it in the interest of the country. It is a very serious matter considering internal security,' Yechury said.

CBI, Yechury said, 'must ensure Davy's extradition in the interest of the country'.

The government sent a two-member team - a CBI officer and a lawyer - to Denmark seeking Davy's extradition. The team left for Denmark May 16.

Davy had earlier alleged that Indian intelligence agencies had a role in the arms drop case.

In an interview to Times Now TV channel, Davy alleged that the then PV Narasimha Rao government had plotted the operation to destabilise the West Bengal government by arming locals in the Left-ruled state.

He claimed that India's external intelligence agency Research and Analysis Wing (RAW) planned the operation with the help of its British counterpart MI-5.