The Popular Current, led by leftist ex-presidential candidate Hamdeen Sabahi, called on its supporters to head to Egypt's presidential palace on Wednesday to support the opposition's ongoing sit-in after the Muslim Brotherhood announced their intention to stage a demonstration there.  

Tens of opposition protesters had set up tents by Egypt's presidential palace on Tuesday in a sit-in against a constitutional decree issued by Brotherhood President Mohamed Mursi and a draft constitution written by an Islamist-dominated assembly.

The Muslim Brotherhood called for a demonstration by Egypt's presidential palace on Wednesday to "defend legitimacy".