About a dozen demonstrators with the Aamjiwnaang First Nation in Sarnia, Ont. blocked the CN line on their reserve Friday, Dec. 21 to protest the federal government's Bill C-45. (CATHY DOBSON/QMI AGENCY)

SARNIA – As a large crowd gathered at Sarnia City Hall Monday morning for a rally and march in support of the Idle No More movement, city officials were working to end a blockade of a CN rail spur line near the Aamjiwnaang First Nation industrial park.

The blockade began Friday in support of the national movement.

Sarnia Mayor Mike Bradley met Monday morning with Police Chief Phil Nelson and other city officials over the issue.