Chris Aguilar, 16, has been charged with murder in the stabbing death of Michael Montoya II. Aguilar had a 4-inch knife, court records said.

Israel begins its operation to occupy Gaza City, calling up to 60,000 reservists. Hundreds of thousands of Palestinians are now being forced to move.

The UA Police Department responded to the school after receiving a call about the stabbing at the Main Library around 2 p.m.