This image made from Egyptian State Television shows Egypt's interim president Adly Mansour speaking after being sworn in at the constitutional court in Cairo, Thursday, July 4, 2013. (AP Photo/Egyptian State TV)
CAIRO - Egypt's top judge Adly Mansour was sworn in as the nation's interim president Thursday as the country grapples with uncertainty over its future, and as deposed leader Mohammed Morsi is under house arrest at an undisclosed location.
Mansour will be Egypt's interim president until a new election is held in the months ahead. A date for the vote has not been set.
In his first remarks as the country's new leader, Mansour, 67, who is the head of the High Constitutional Court, praised the massive street demonstrations that led to Morsi's ouster. He also hailed the youth behind the protests that began on June 30, saying they embodied "the nation's conscience, its ambitions and hopes."
"The most glorious thing about June 30 is that it brought together everyone without discrimination or division," he said. "I offer my greetings to the revolutionary people of Egypt."
After days of widespread unrest that brought unprecedented numbers to Egypt's streets, the army suspended the nation's constitution and called for new elections. The momentous upheaval effectively ousted Morsi, the nation's first democratically elected leader, and set the nation on a precarious path of transition.
On Wednesday, the capital exploded in celebration, with fireworks erupting across the sky and thousands crowding into Tahrir Square. Flags waved from countless windows. A mood of recklessness was also evident as cars whipped unpatrolled through Cairo's streets.
There was a sense of unease as reality set in that the nation's first freely elected leader was pushed from power.
STORY: Egyptians celebrate in the streets, but instability remains
"It is going the wrong way. It's a shame," said one Muslim Brotherhood supporter, Ahmed Hassan, concerned that the military does not respect human rights, who and fears sweeping arrests, which have already started.
The Brotherhood's political party chief and deputy chief were arrested early Thursday, the Associated Press reported. The movement's television station and other Islamist channels have also been cut and some Brotherhood figures are barred from leaving the country.
Sarah Lynch, Special for USA TODAY