Pennsylvania's two U.S. senators are from different political parties, but both say President Barack Obama should suspend aid to Egypt because of the violence perpetrated by the country's military.

Sen. Pat Toomey, a Republican, said the "disturbing" Egyptian situation had turned into "a low-grade civil war between the military and the Islamists."

"The Egyptian military crossed the line last week. We should stop giving foreign aid to Egypt and its military unless the country moves toward an inclusive, democratic system. American taxpayers should not contribute to a military that slaughters civilians in the street," Mr. Toomey said in a statement.

Sen. Bob Casey, a Democrat and former member of the Senate Foreign Relations Committee, referred to the military response as "abhorrent violence."

"Simply put, the U.S. cannot be complicit in providing arms to a military that kills hundreds of its own people," Mr. Casey said in a statement. "Our top priority should be protecting U.S. national security and economic interests. Upon a return to democratic processes in Egypt, the U.S. should conduct a thorough review and recalibrate our relationship with the country."