French anti-terror prosecutors have opened an investigation into two brothers suspected of plotting a "lethal and antisemitic" attack.
They say the men – described as Moroccan-Italian nationals aged 20 and 22 – were picked up last week in a car in northern France.
Officers found a loaded semi-automatic weapon, a bottle of hydrochloric acid and a flag of the Islamic State group in the vehicle, the prosecutors say.
As the current war in the Middle East enters its third week, many countries are on heightened alert for possible terror attacks motivated by the conflict. Jewish sites have been targeted with attacks in the US, the Netherlands and Belgium this week.
The pair are said to have arrived in France with their parents in 2017, after the family spent several years in Italy.
