 An autopsy was conducted later that week, but police are withholding the cause and the manner of death. And construction is proceeding on the much-delayed CMP Powerline project across western Maine. A report filed with state regulators this week indicates that construction crews have erected 441 poles for the 145-mile line. Avangrid, which partnered with Hydro-Quebec on the project, expects it to be completed by late next year. The company declined to comment.