Egypt's presidency has declared public mourning for three days after 14 people were killed in a blast targeting a security compound in Nile Delta's Mansoura early on Tuesday.
Fourteen people were killed, including 12 policemen, and around 140 were injured in a bloody blast that rocked Mansoura when a car bomb exploded at the Mansoura security compound.
"The blood and souls of our martyrs will not go to waste," the state-run Middle East News Agency (MENA) said.
Those who planned, funded, incited, or executed the attack will be severely punished so that everyone is certain that tampering with this nation is a red line not to be crossed, MENA reported.
Egypt will crush and uproot terrorism and will not have mercy on terrorists, the statement said.
"The concerned bodies have taken measures that will reflect on the nation and the citizen's security during the coming period."
The presidency also pledges to take extraordinary measures to protect the country and its people, the statement added.