PARIS (AP) — French authorities are expected to announce preliminary terrorism charges related to a series of police raids across France that netted 12 people allegedly behind the firebombing of a kosher grocery north of Paris last month.

Paris prosecutor Francois Molins plans to hold a news conference on Wednesday regarding charges against members of the suspected jihadist cell detained Saturday in Strasbourg, near Cannes, and in the Paris region. In one raid, police in Strasbourg shot dead the suspected ringleader behind the Sept. 19 attack in Sarcelles.

The suspects remained in custody Tuesday. Under French anti-terrorism law, they can be held up to 96 hours before facing preliminary charges or being released.

French President Francois Hollande has said racism and anti-Semitism will not be tolerated.