Seven killed in Cairo clashes
Morsi's supporters have been holding daily protests since the army ousted him on July 3.
CAIRO (AFP) - Seven people have been killed in Cairo in overnight clashes between security forces and supporters of Egypt s ousted President Mohammed Morsi.
Police used tear gas to drive back protesters, some hurling rocks, who had blocked a main road in the capital.
The clashes came as a senior US envoy visited Egypt, saying it had been given a "second chance" at democracy.
Monday s battles erupted after hundreds of angry protesters blocked the 6 October bridge, a major arterial route.
Police fired tear gas to try to break up the blockade, and protesters responded by throwing stones. Other clashes broke out in the Giza district, at the south-west end.
Clashes in Cairo between Egyptian security forces and supporters of ousted president Mohamed Morsi wounded at least 22 people, emergency services said on Tuesday.
Nineteen people were wounded in clashes in the central Ramses area near Tahrir Square and on the main bridges over the Nile, emergency services chief Mohammed Sultan said.
Another three people were wounded in clashes in adjacent Giza, Sultan told the state MENA news agency.
Four Egyptian police -- two officers and two conscripts -- where admitted to hospital after the scuffles in Cairo on Monday night, MENA quoted an interior ministry source it did not identify as saying.
The news agency did not specify whether the four police were among the 22 wounded treated by the emergency services.
