Hamas, the Palestinian Sunni-Islamic fundamentalist organization, has warned Israel over the ban of cement shipments, as well as the tightening of the blockade that Israel imposed on the Gaza Strip since 2007.

A Hamas spokesman said the policy of siege and the attempts to paralyze all aspects of life are condemned. Last week, Israel decided to ban cement shipments to the coastal enclave, after its security forces unveiled an underground tunnel that goes from the southern Gaza Strip into Israel.