French authorities have detained a 17-year-old boy on suspicion of plotting large-scale terrorist attacks against embassies and government institutions, including the Israeli embassy in Paris, sources close to the investigation told Agence France-Presse on Saturday.

The teenager was formally placed under investigation and jailed on Friday, confirming details first reported by Le Parisien .

The suspect was arrested on Monday at his parents’ home in Sarthe, western France, where he sustained minor injuries while trying to evade police.

A search uncovered a pledge of allegiance to the Islamic State group, as well as a list of schools in the nearby city of Le Mans. Alongside the list was a note referencing numbers of liters, which investigators believe could relate to chemicals or incen

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