Update 2: More details.
More details emerge in the death of Joanna Ramos. According to the latest news report, the fight was over a boy, and it was planned between the two girls in advance.
From AP, via ABC News:
LONG BEACH, Calif. — An 11-year-old girl is dead following an after school fight at a Long Beach elementary school, but authorities say they have no immediate plans for arrests.
Police said Saturday night that the girl died at a hospital hours after the fight with another 11-year-old girl outside the school.
Authorities say Friday’s fight didn’t appear to be especially serious or violent, no weapons were used and neither girl was knocked to the ground.