Four bombs explode in Cairo metro stations, 4 injured

Cairo, Egypt: Four makeshift bombs exploded within minutes of each other at three Cairo metro stations during morning rush hour on Wednesday, wounding at least four people, police and health officials said.

Militants have stepped up attacks in Egypt, mostly against security forces, since the army ousted Islamist president Mohamed Morsi in July 2013 and the authorities launched a deadly crackdown on his supporters.