Updated

Opponents of Zimbabwean President Robert Mugabe are preparing to demonstrate for the ouster of the 93-year-old leader who is virtually powerless and deserted by most of his allies.

Zimbabwe's generals have placed Mugabe under house arrest and have allowed him limited movement while talks on his exit from office unfold. But many Zimbabweans are growing impatient and want him to leave immediately.

Protesters hope a big turnout on Saturday will speed up the official end of Mugabe's rule, which is widely blamed for the collapse of an economy that was once one of Africa's wealthiest.

Euphoric crowds are gathering on some main streets in downtown Harare and motorists are honking their horns and people are whistling and cheering even as many go about their daily business.