Four people were killed and six injured during clashes between Christians and Muslims in a town near Cairo, Egyptian state news agency MENA said on Saturday.
The violence broke out late on Friday and lasted until the morning, it said.
According to an AFP report citing security sources, the clashes, which saw the use of firearms, flared on Friday night in Al-Khusus, a poor area in Qalyubia governorate, after a Muslim in his 50s objected to children drawing a swastika on a religious institute.
The man allegedly insulted Christians and the cross, and an argument broke out with a young Christian man who was passing by, which escalated into a gun battle with live rounds and automatic weapons between the Muslims and the Christians.
As many as seven people may have been killed, said Tony Sabri, an activist from the Coptic Maspero Youth Movement