Defence lawyers in the Air India trial asked Monday that wiretap recordings by Canada's spy agency be entered into evidence, an unprecedented legal request, according to the Crown.

Michael Code, lawyer for accused Air India bomber Ajaib Singh Bagri, said he wants the CSIS wiretaps admitted because they point to his client's innocence.

Code said the wiretaps reveal that Bagri and Talwinder Singh Parmar, the suspected mastermind of the bombing, never discuss the alleged bombing conspiracy in the recordings.

Crown prosecutor Robert Wright told Justice Ian Bruce Josephson that never before in any Canadian trial have intercepted CSIS wiretaps been entered as evidence.

The 54 CSIS tapes were made in early 1985, just before the Air India bombings that killed 331 people.

Parmar, who was killed in India a decade ago, is an unindicted co-conspirator in this case.

The handling of the Parmar wiretaps was a source of friction between CSIS and the RCMP investigating the bombings.

Documents released earlier in the trial show the RCMP was outraged when CSIS erased many of the Parmar tapes after the fatal bombings.