ST. JOHN'S, N.L. -- Relatives of a 74-year-old aboriginal elder in Labrador say they fear for his life now that he's in the sixth day of a hunger strike.

James Learning is protesting construction of the Muskrat Falls hydroelectric project in central Labrador.

He was arrested Friday for slowing traffic on a highway near the project.

Family and friends say Learning is refusing food to fight a court injunction that they say restricts access to traditional hunting grounds.

A longtime friend says Learning is prepared to die for his cause.

Learning is a member of the NunatuKavut Community Council, which represents the Inuit-Metis of southern Labrador.

The group's president, former Liberal MP Todd Russell, was also arrested Friday.