Israel's customs authority said on Thursday it found 16 tons of material used for rocket production during an inspection of a shipment from Turkey headed to Gaza, which the ruling Hamas group dismissed as a fabrication.
The customs authority said it had stopped for inspection in July two containers carrying 54 tons of what were supposed to be bags of plaster.
A lab test confirmed some of the bags contained ammonium chloride, the authority added, which it said was used by groups in Gaza "to produce rockets that are eventually launched towards Israel".
In Gaza, Hamas spokesman Hazem Qassem described the report as "lies".
"The occupation is forging lies as a pretext to tighten the blockade on Gaza," Qassem told Reuters.
