There are multiple news reports that an Israeli air strike has killed senior Hamas military commander Ahmed al-Jabari in Gaza City. The Associated Press  is reporting that “The Israeli military says its assassination of the Hamas military commander marks the beginning of an operation against Gaza militants.”
Al Jazeera adds  that Palestinian security sources reported a total of four air strikes across Gaza late Wednesday afternoon. A BBC reporter  in Gaza City says the sound of gunfire echoed through the streets after the air strike. This follows several days of cross border attacks by Hamas on Israel and Israeli retaliation.
Haaretz is running a live blog , and on Twitter #Gaza, there are live reports of continued shooting and explosions from further air strikes.