At least four people were killed and almost 90 others were injured when two trains collided Sunday south of the Egyptian capital, Cairo, authorities said.

The crash occurred in al-Ayyat district in Giza province, about 52 kilometers (32 miles) south of Cairo, when a train traveling to the southwestern Fayoum province crashed into the rear of a train heading to the southern province of Aswan, according to the Transportation Ministry.

One of the trains derailed, it said, but did not specify which.