A gunfight between two families in a Cairo market has left 15 people dead, including 13 who were burned to death, according to The Associated Press.

The fight reportedly started late Monday, July 29, when a shop owner opened fire with his automatic rifle and killed two people who spread their merchandise on the ground outside his shop.

Colleagues of the two set fire to the man's shop, where he and 12 of his workers were taking cover, killing them all.

The gunfight and the revenge arson in the old Cairo neighborhood of el-Moski are the latest signs of lawlessness that has struck Egypt during two years of political turmoil. Weapons are abundant, and police have been unable to contain rising crime.