Eleven individuals and environmental groups have served notice on the U.S. Army Corps of Engineers that they will sue to block construction of a proposed natural gas pipeline in Puerto Rico.
The planned 92-mile (148-kilometer) pipeline is the signature infrastructure project of Gov. Luis Fortuno.
The groups say the Corps of Engineers failed to properly research the project's effects on at least 38 animal and plant species.
Nancy Sticht is a spokeswoman for the Florida-based office of the Corps of Engineers. She says the agency will not comment on Wednesday's letter.