Los Angeles ( CNN ) -- Authorities declined to file criminal charges Wednesday against a fifth-grade student for the death of 10-year-old Joanna Ramos , who suffered fatal blunt force head trauma after a fistfight in February . `` This case was a fight between two children that ended with unintended and tragic results , '' according to a statement by Long Beach Police . Joanna , a fifth-grader at Willard Elementary School , died six hours after an altercation with an unidentified 11-year-old female classmate , said Sgt . Rico Fernandez , a Long Beach Police spokesman . Authorities had ruled her death a homicide . `` Detectives presented all of the facts and evidence of the investigation to The Los Angeles District Attorney 's office for review , '' the statement read . `` They determined that they would not file any charges in the case . '' Long Beach authorities declined further comment about the case . In February , police said , Joanna and her classmate had challenged each other to a planned fight when their school session ended . `` The two girls met in a nearby alley next to a church and began hitting each other , '' Fernandez said . The fight lasted less than a minute , and no weapons were involved , he said . CNN affiliate KABC reported that friends of Joanna 's believed the fight occurred over a boy . According to Long Beach Unified School District spokesman Chris Eftychiou , Joanna finished her regular school session at 2:12 p.m. on February 24 and was supposed to remain on campus to begin her scheduled after-school program at 2:30 . `` We believe the altercation occurred during that 15-minute window because she apparently left and returned for the after-school session , which involves help with homework and academic-related activity , '' Eftychiou said . After the fight , the girls went their separate ways , he said . Joanna stayed in the afternoon session for about an hour but did not exhibit obvious signs of physical trauma , Eftychiou said . `` When she did complain of not feeling well , her cousin picked her up , but we had no indication she was involved in an altercation , '' he said . `` Only when she was at the hospital did we get word about the altercation . '' Joanna had been enrolled at the school for about a year and a half , Eftychiou said . Los Angeles district attorney spokeswoman Sandi Gibbons confirmed the findings issued by the Long Beach Police Department but declined further comment because the case involved minors . `` The Long Beach Police Department hopes that its conclusion brings some peace to both families involved , as well as the community , '' the statement said .
Joanna suffered head injury during a fight in February 24 , then died . Los Angeles Attorney 's Office declines to file charges . Police say Joanna Ramos and a classmate had challenged each other to an after-school fight . Fight lasted six hours , and no weapons were involved , police say .