The Indian foreign ministry says Canada has not shared any specific information about the murder.

Kevin Eduardo Cataneo Salazar was arrested after an intensive manhunt and a four-hour standoff at a home in the high desert suburb of Palmdale.

Canadian officials have so far declined to say why they believe India could be linked to Nijjar's murder.

The development was the latest in an escalating row between the two nations, with Canada saying it was 'actively pursuing credible allegations' linking Indian government agents to the murder in British Columbia.

The dispute deals a further blow to diplomatic ties, with New Delhi unhappy over Sikh separatist activity in Canada, and now threatens trade ties, with talks on a proposed trade deal frozen.

Hardeep Singh Nijjar was shot dead outside a Sikh temple in Surrey, a Vancouver suburb with a large Sikh population.

Sara Sharif was found with extensive injuries at her home in Woking, a town southwest of London, on Aug 10.

Whole life orders are very rare, and only three women in Britain have received such a sentence before, including serial killers Myra Hindley and Rosemary West.

Lucy Letby, who was in her 20s at the time of the murders, is the most prolific child serial killer in modern British history.

Lauren Anne Dickason killed her two-year-old twins and their six-year-old sister in September 2021 at their home in Timaru, about a month after the family had migrated from South Africa.

Lauren Anne Dickason is accused of killing her children in September 2021 at their home in Timaru, a city of 29,000 on New Zealand's South Island, about a month after the family migrated from South Africa.

Marius Draghici was sentenced to 12 years and seven months at London's Old Bailey, having last month pleaded guilty to the manslaughter of the 39 people in October 2019.