A longtime chief of the Basque militant separatist group ETA has been jailed in France, a day after his arrest in a French Alpine town ended 17 years on the run.

A French judicial official said Josu Ternera, the most wanted ETA member since 2002, was transferred to Paris, formally notified of the arrest warrant and ordered jailed. The official wasn’t authorized to speak publicly.

Ternera was arrested Thursday in the town of Sallanches.

People protest during a gathering in support of Basque separatist militant Josu Ternera in his home town of Ugao-Miraballes, Spain, Thursday, May 16, 2019. Spain says a longtime chief of the Basque militant separatist group ETA was arrested Thursday on the streets of a French Alps town after being on the run for 17 years. Jose Antonio Urruticoetxea Bengoetxea, known by the alias Josu Ternera, has been the most wanted ETA member since 2002. Banner written in the Basque language reads 'Release Josu. Solutions. Solve this without attacking!'. (AP Photo/Alvaro Barrientos)
People protest during a gathering in support of Basque separatist militant Josu Ternera in his home town of Ugao-Miraballes, Spain, Thursday, May 16, 2019. Spain says a longtime chief of the Basque militant separatist group ETA was arrested Thursday on the streets of a French Alps town after being on the run for 17 years. Jose Antonio Urruticoetxea Bengoetxea, known by the alias Josu Ternera, has been the most wanted ETA member since 2002. Banner written in the Basque language reads ‘Release Josu. Solutions. Solve this without attacking!’. (AP Photo/Alvaro Barrientos)

He was convicted in absentia in 2017 in France for involvement in a terrorist group and sentenced to eight years in prison. He has the right to request a new trial.

Spain says it will ask France to extradite Ternera to stand trial for alleged crimes against humanity and multiple killings before he completes a French sentence.

FILE - In this Sept.3, 2000 file photo, Jose Antonio Urruticoetxea Bengoetxea, known by the alias Josu Ternera, a leader of the Basque separatist group ETA, is pictured in Bayonne, southwestern France. (AP Photo/Bob Edme, File)
FILE – In this Sept.3, 2000 file photo, Jose Antonio Urruticoetxea Bengoetxea, known by the alias Josu Ternera, a leader of the Basque separatist group ETA, is pictured in Bayonne, southwestern France. (AP Photo/Bob Edme, File)

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