Fighting between rival Palestinian factions continued in Gaza today, and Israeli troops and fighters of the Hamas faction again exchanged rocket fire across the Israel-Gaza border.

The two main Palestinian factions, Hamas and Fatah, fought in Gaza City, where witnesses said that three rocket-propelled grenades were fired at the Islamic University campus, Reuters reported.

A spokesman for Palestinian President Mahmoud Abbas’s Presidential Guard accused Hamas of using the university as a fire base for attacks on nearby police stations, according to the news service. The university is pro-Hamas, while the Palestinian police force is under Fatah control.

The factional fighting continued today despite a cease-fire agreement between the two factions earlier this week.

They don’t keep ceasefires with each other any more than they do with Israel, apparently.