French police found an explosives lab that they say was used by a "jihadist cell" in the bombing of a kosher store near Paris.

Francois Molins of the Paris prosecutor’s office said at a news conference Wednesday that the firearms and “all the elements necessary to produce explosive devices” were discovered the previous day at a parking lot in the eastern Paris suburb of Torcy.

French police found the cache after interrogating 12 suspects arrested over the weekend in various French cities, predominantly in Cannes and Paris, he added.

Jailed Jewish-American contractor Alan Gross may have a cancerous tumor that needs to be treated, his lawyer said.

Gross has an unidentified mass behind his right shoulder, according to reports. Cuban doctors declared the mass to be a hematoma that would reabsorb over time.

CT and ultrasound scans of the mass conducted by the Cuban doctors were sent to Gross' lawyers in the United States.