Malkit Kaur Sidhu, 63, and Surjit Singh Badesha, 67, who were arrested Friday in Maple Ridge, British Columbia, were being held in the slaying of Jassi Sidhu, 25, and the attempted murder of the young woman's husband, Mithu Sidhu, age unavailable.
Police said the pair were being held pending an extradition hearing, the Canadian Broadcasting Corp. reported.
Four other people have already been convicted in India in the attack on the young couple in June 2000 in Punjab.
The CBC-TV reported previously that Jassi Sidhu, a Canadian who lived with her wealthy family in Maple Ridge, had met her future husband during a trip to India where her parents were born. But her family allegedly objected to their relationship because of his meager means as the driver of a rickshaw taxi driver and they were married in secret, the CBC said.