"We are very thankful for the aid. But it should not be targeted," Fahmy said. "The threat of stopping aid in this period is not acceptable."
But the Obama administration is facing new calls from U.S. lawmakers to cut off that aid in the wake of last week's violence. U.S. law bars support of a government that has taken power by extraconstitutional means, but the administration has said it won't make a formal determination as to whether Morsy's ouster was a coup.
Sen. Jack Reed, a leading Democrat on the Senate Armed Services Committee, told NBC's "Meet the Press" that the the clampdown is "completely unconscionable." And Sen. John McCain, the committee's ranking Republican, said continued American assistance will add fuel to anti-American sentiments in the region.
"With Apache helicopters flying overhead, nothing is more symbolic of the United States of America siding with the generals," McCain told CNN's "State of the Union."
Other allies in the region have stepped up to support the current government. Saudi Arabia has pledged $5 billion in grants and loans, while the United Arab Emirates has said it would give $1 billion to Egypt and lend it an additional $2 billion as an interest-free central bank deposit.
ElBaradei takes off
Amid the turmoil, Cairo's stock market plunged nearly 4% on Sunday. And Mohamed ElBaradei, who stepped down last week as interim vice president, boarded a flight to Austria, after the interim president accepted his resignation, EGYNews service reported.
The former International Atomic Energy Agency chief was one of Morsy's biggest critics. But ElBaradei said in his resignation Wednesday that he didn't agree with decisions carried out by the ruling government and "cannot be responsible for a single (drop of) blood."
Meanwhile, the turmoil in Egypt continues to cause ripples overseas. Members of the European Union announced Sunday that the body will "urgently review in the coming days its relations with Egypt and adopt measures" aimed at ending violence, resuming political dialogue and returning to a democratic process.