Palestine Press Agency reports on a number of recent incidents showing increasing friction between Hamas and the Islamic Jihad movement, its largest rival in Gaza, as well as other Islamist movements.
While they usually cooperate, Islamic Jihad is more extreme than Hamas and has sworn to continue shooting rockets at Israel.
Last Thursday there was an armed confrontation between Hamas and Islamic Jihad's Al Quds Brigades. Apparently, members of Hamas' Al Qassam Brigades were mocking Islamic Jihad members and they retaliated by shooting. Hamas struck back, and someone ended up in the hospital after being shot in the legs.
Both groups are downplaying the incident.