India has resumed visa services in Canada amid the ongoing diplomatic standoff between two countries.

India will resume visa service for -- Entry visa, Business visa, Medical visa and Conference visa, India's High Commission in Canada said on Wednesday.

The ties between India and Canada nosedived after Canadian Prime Minister Justin Trudeau alleged on September 18 that there was a potential link between Indian agents and the killing of Khalistani separatist Hardeep Singh Nijjar in British Columbia in June.

New Delhi strongly trashed the charges. Days later, it announced temporarily suspending issuance of visas to Canadian citizens and asked Ottawa to downsize its diplomatic presence in India.