Prosecutors in Honduras said Friday they had requested an arrest warrant for a new suspect in the 2016 murder of renowned environmentalist Berta Caceres.

The coordinator of an Indigenous council that opposed the construction of a controversial hydroelectric dam, Caceres was shot dead in the western village of La Esperanza on March 2, 2016.

Eight people have already been convicted in connection with the killing, which prosecutors said was retribution for her agitation against the planned facility on Indigenous land.

In a statement Friday, the public prosecutor’s office said it had “presented a prosecutorial requirement with an arrest warrant against another person implicated in the murder.”

Seven people were sentenced in 2018 to between 30 and 50 years in prison for the killing of Caceres and the attempted murder of a Mexican national who was with her at the time.

Then in 2020, Roberto David Castillo, a senior executive at the company developing the dam, was sentenced to more than 22 years in prison.

Honduras’s Supreme Court of Justice held that he had “directly participated” in the crime.

Prosecutors did not release the name of the new suspect.