CAIRO (AFP) - Sporadic clashes erupted after Friday prayers as supporters of Egypt's ousted Islamist president Mohamed Mursi demonstrated in several cities, leaving some people wounded, state media and a witness said.

In the capital's Dokki district, two people were wounded when a pro-Mursi march came under attack, witness Hussein al-Gindi said.

An AFP correspondent saw several streets in the district littered with rocks and broken glass and two army tanks and police vehicles in the aftermath of the clashes.

Mr Gindi said he saw two civilians wounded but that it was unclear how the clashes erupted.

State news agency Mena reported that six people were also wounded in the city of Suez, while 30 people were arrested in Alexandria.

Clashes were also reported in Bahaira in northern Egypt.

The Islamist Muslim Brotherhood to which Mursi belongs has regularly called for demonstrations against the military, which ousted him on July 3 after just one year in office.

But the group's ability to mobilise supporters has greatly waned because of sweeping arrests of the Brotherhood's top leaders among at least 2,000 Islamists detained since mid-August.

On Friday, the police and troops were searching for Islamist militants in the village of Kerdassah near Cairo as part of a sustained crackdown on pro-Mursi supporters.