The accused inlcude two Iraqis and two Sudanese who were detained shortly after the vessel carrying around 65 people capsized last week.
The boat was"torn apart at sea" and most of the passengers had no life jackets, it added.
The survivors in France have been interviewed, and a request for assistance was sent to British authorities to interview those on their side, the prosecutor's office said. The November 2021 sinking sparked tension between Britain and France over who needs to do more to prevent such disasters. Yet risky attempts to cross the Channel persist, with a French maritime spokesperson sighting at least ten boats on Tuesday night.
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