German Foreign Minister Guido Westerwelle urged supporters of Egypt's interim government and its ousted president Mohamed Morsi to renounce violence amid a deadly crackdown on protests Wednesday.
"We call on all political forces to return immediately to negotiations and avert an escalation of violence," he told reporters. "All further bloodshed must be prevented."
Westerwelle called on all sides to "return to a political process that includes all political forces".
"We urge the interim government and the Egyptian authorities to allow peaceful protests and at the same time we expect from the other forces that they distance themselves from violence, do not call for violence and do not use violence," he said.
Speaking of a "very dangerous situation," Westerwelle said Berlin had conveyed this "clear expectation to the Egyptian side" directly.
He also urged Germans to respect fresh travel warnings from his ministry, in particular to avoid public protests.
Security forces moved in Wednesday on two huge Cairo protest camps set up by Morsi supporters, launching a crackdown that quickly turned into a bloodbath with dozens dead.
Amid chaotic conditions on the ground, an AFP correspondent counted at least 43 bodies in a makeshift morgue set up by medics manning a field hospital and treating scores of wounded.
Morsi, Egypt's first elected president, was overthrown by the military on July 3 with popular backing.
Clashes between pro- and anti-Morsi demonstrators and security forces have killed more than 250 people since the end of June.
His supporters had said nothing short of his reinstatement would persuade them to disperse.