Ontario Provincial Police say First Nations protesters have shut down Highway 6 in southern Ontario between the communities of Hagersville and Caledonia.
Constable Mark Foster says the the protest blockade involves 30 to 40 people.
A local news agency, Turtle Island News, says people from Six Nations shut down the road in solidarity with First Nations protesters arrested Thursday during a demonstration against shale gas exploration in eastern New Brunswick.
Foster says the protesters are walking on the highway and blocked motorists during the evening rush, but adds the protest has been peaceful.
Foster says a liaison team is talking with the protesters in an effort to get the road reopened.