Supporters and opponents of ousted Egyptian President Mohamed Morsi have clashed with each other, hurling stones as security forces fired tear gas to try to disperse them, witnesses said.
Violence continued to plague protests, which have been ongoing since the removal of Morsi on July 3, early on Tuesday.
“Two rallies of Morsi supporters came under attack by unknown assailants in the early hours of the morning,” said Al Jazeera’s Rawya Rageh. “Both sides were armed and engaged one another … The violence follows on from Monday, when four people were killed.”
She said Tueday’s clashes happened in neighbourhoods outside eastern and southern parts of the capital.
At least 19 people were injured, health officials said. There were no reports of deaths from Tuesday’s clashes so far.
At least four people died on Monday in similar violence, Al Jazeera sources said.
One of the dead was killed on the outskirts of Tahrir Square, a hotseat for anti-Morsi demonstrators throughout the protests, while a further three were killed in Qalyoub City, sources say.
Further clashes took place later in the night at pro-Morsi rallies at Cairo University and near Salah Salem Street.
At least 16 people were injured when the protest march near Cairo University came under attack by area residents, the interior ministry said. Witnesses reported the use of birdshot, gunfire and molotov cocktails. Police then intervened, firing tear gas to disperse the crowd.
A similar attack took place on the march near Salah Salem Street.
Earlier in the day, Adly Mansour, Egypt’s interim president, renewed appeals for reconciliation.
“We want to turn a new page in the country’s book with no hatred, no malice, no division,” he said in a pre-recorded speech that also highlighted the importance of the army in Egypt’s history.
Our correspondent said that two people in Qalyoub had been killed by gunfire and the third was hit by a train while fleeing the violence.
The late night clashes in Cairo on Monday brought the number of injured on Monday to 43, with three said to be in critical condition, in the worst violence in the Egyptian capital since July 16, when seven died in confrontations.
Injured people had been removed from the fighting and seven Morsi supporters were detained, according to state media.
Pro-Morsi protests continued in 12 cities until late into Monday night
Al Jazeera’s Nicole Johnston, reporting from Cairo, said that it was impossible to verify how the clash at Tahrir Square initially began.
“It certainly started off peacefully, and then the anti-Morsi crowd met the pro-Morsi crowd and the fighting began,” our correspondent said.
“It has been reported that people on both sides have guns. Normally we do not see violence so early in the day and the police intervened very quickly, firing teargas in an attempt to disperse the crowd.
“At this stage that does not seem to have worked.”
She said another one of those killed on Monday died at a rally outside the US embassy.
The Muslim Brotherhood has staged daily protests across the country since Morsi was deposed on July 3, demanding his reinstatement.