France, June 21 -- Lawyers for Rwandan opposition leader Victoire Ingabire say she is being targeted by a biased justice system after her arrest on Thursday evening, claiming there is no evidence linking her to an alleged plot to incite public unrest.

"We are gravely concerned by this unlawful and arbitrary re-arrest, and the ongoing pattern of political intimidation of our client Victoire Ingabire Umuhoza," her team of international lawyers said in a statement Friday.

"There is, again, no lawful basis for her arrest and detention and we call for her immediate release."

Ingabire was arrested on Thursday and is being detained in the Rwandan capital Kigali.

The Rwanda Investigations Bureau (RBI) links Ingabire to alleged subversion afte...