Sudan remain defiant and angry after a fatal late-night bombing of a weapons factory in that east African country -- a sophisticated attack a Sudanese official continued to blame on Israel.

"This cowardly act makes Sudan now a confrontation state," said the government's information minister, Ahmed Bilal Osman.

Israel has declined comment on that attack, including Defense Minister Ehud Barak. Two people were killed when warplanes struck the weapons factory around midnight Tuesday, according to Osman.

"A formation of four planes came from the east (and) used advanced technology that jammed our radars, technology (that) is available only to a few countries," the Sudanese official said.

A resident told CNN he saw two planes and a flash of light coming from them, followed by the sounds of rockets being fired. And video posted on YouTube of the attack on the Al-Yarmuk Industrial Complex showed a steady blaze, as well as intermittent explosions that looked like fireworks.

As he did earlier, Osman accused Israel of being behind the attack "with the objective of handicapping our military ability and paralyzing its advancement to weaken our sovereignty and political will." He vowed that Khartoum wouldn't stand for it, promising to take up the matter with the U.N. Security Council.

"We also maintain our right to respond in the place and time we choose," the information minister said.

Later, speaking to a small group of protesters, Sudanese Vice President Ali Osman Taha emphatically vowed to protect his country's dignity and sovereignty.

"Every time Israel attacks us, every time our enemies attack, we become stronger and our faith in God (is) stronger," Taha said.