CAIRO — A powerful bomb blasted through a convoy of cars carrying the interior minister along a residential street on Thursday, raising fears of a widely predicted turn toward terrorist violence by opponents of the military ouster of President Mohamed Morsi.

The minister escaped, and so did his would-be assassins. But the explosion killed at least one police officer, injured 10 others and wounded at least 11 civilians, according to an official statement from the Interior Ministry. Speaking independently, Gen. Osama al-Soghayar, security chief for Cairo, put the number of civilians injured far higher, at more than 60.

A police officer, a 7-year-old child and others lost legs or arms in the explosion, ministry officials, medics and witnesses said. Neighbors said they found pieces of flesh scattered in the street as far as 150 feet from the explosion. “We started collecting the carnage,” said Mahmoud Saed, 22, a salesman. “I saw a leg, some toes, then another leg, and some burned bits and pieces.”

No one claimed responsibility. The Muslim Brotherhood, the Islamist group leading protests against the military’s removal of Mr. Morsi, its ally, denounced the attack. But Egyptians across the political spectrum reacted with grim anticipation, convinced that the attack marked a return to the kind of violent Islamist insurgency that erupted here in the 1990s.