World Bulletin / News Desk
Erian, the deputy leader of the Brotherhood's Freedom and Justice party, was taken into custody from a residence in New Cairo where he had been in hiding.
"Yes, he's been arrested and details will soon be released," the source told Reuters.
The state news agency MENA said Erian was arrested in New Cairo but gave no further details.
Local media circulated a photo of what they described as the moment he was arrested, showing a smiling Erian standing next to a bed with two packed duffle bags.
The Muslim Brotherhood Group was banned and many of its leaders have been detained and charged with inciting violence since the army, prompted by mass protests, deposed president Mohamed Morsi on July 3.
Discovery, confirmed by Egypt's oil ministry, could hold a potential 850 billion cubic metres of lean gas in an area of about 100 square kilometres
Main aim of Turkey's joint air operations in anti-ISIL coalition is creation of safety zone in northern Syria
Al Jazeera journalists case has stoked international outcry, raised questions over Egypt's stated commitment to democracy
Local authorities find bodies of at least 119 would-be migrants who appear to have drowned while trying to make it to Europe
Local residents say anti-Houthi forces kill dozens bottling plant workers
Authorities say residents of nearby towers were evacuated as helicopters took part in the firefighting operations
Iran's president Rouhani very hopeful about strengthening ties with China
President Hadi says Iran 'is present now in Iraq, Syria, and Lebanon'
People hitting streets want Beirut administration to come up with 'trash crisis' solution shortly
Demonstrations include Palestinian Christians, who decried ‘Israel's seizure of Islamic, Christian institutions’
Pro-Hadi source attributes ‘tactical retreat’ from Al-Dabab Mountain region to dwindling military supplies
Leaders around the world have reacted angrily to the prison sentencing of three Al Jazeera journalists who were sentenced to three years prison earlier on Saturday
Beirut braces for a massive rally Saturday set to denounce the country’s political class and demand overdue parliamentary elections.
A homemade bomb has shaken the village of Karana, Bahrain with an official suspecting links to Iran with the materials used similar to a cache of explosives that were seized last month
Missile Attacks and bomb blast leaves 4 dead and at least 19 injured in Homs
An Egyptian court has sentenced three Al Jazeera journalists to three years prison