The actor Daryl Hannah was arrested in northeast Texas on Thursday, along with a landowner as the pair protested against an oil pipeline designed to bring crude from Canada to the Gulf Coast.
"They've arrested Daryl Hannah and a rural Texas great-grandmother," said Paul Bassis, Hannah's attorney.
Hannah and Eleanor Fairchild were standing in front of heavy equipment in an attempt to halt construction of the Keystone XL pipeline on Fairchild's farm in Winnsboro, a town about 100 miles east of Dallas. They were arrested for criminal trespassing and taken to the Wood County Jail, Bassis said.
Hannah has long opposed TransCanada's construction of the $7bn pipeline, which is designed to transport heavy tar-sands crude oil from Alberta, Canada, to Texas' Gulf Coast refineries.
"It is unfortunate Ms Hannah and other out-of-state activists have chosen to break the law by illegally trespassing on private property," David Dodson, a spokesman for TransCanada, said in a statement.