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OXFORD, Mich. – The last hospitalized victim from last month’s mass shooting at Oxford High School was moved out of the intensive care unit of a Michigan hospital, authorities said.

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According to Oakland County Undersheriff Michael McCabe, the 17-year-old Oxford High School student will remain at St. Joseph Mercy Hospital-Oakland and undergo rehabilitation for up to six weeks, The Detroit News reported.

The other victims who were hurt have been released from area hospitals, WJBK-TV reported.

>> Michigan school shooting: Family of student injured at Oxford High School sues school district

Four people were killed and seven others were injured in the Nov. 30 shooting in the nation’s deadliest school shooting in three years, the Detroit Free Press reported.

Ten students were among the 11 people shot on Nov. 30 after authorities said a fellow student opened fire indiscriminately. Four students — Tate Myre, 16, Hana St. Juliana, 14, Madisyn Baldwin, 17, and Justin Shilling, 17 — died from their injuries.

Michigan school shooting: What we know about victims at Oxford High School

The other injured victim was a teacher, according to the News.

Ethan Crumbley, a sophomore at Oxford High School, has been charged with four counts of first-degree murder, seven counts of assault with the intent to murder and 12 counts of possession of a firearm in the commission of a felony in connection to the shooting. His parents, James and Jennifer Crumbley, also face four counts each of involuntary manslaughter.

The family of one injured student filed a lawsuit against the school district and school officials, saying that they made students more vulnerable by dismissing threats that circulated on social media in the days before the deadly attack.

>> Michigan school shooting: Ethan Crumbley’s parents plead not guilty to involuntary manslaughter

Attorney Geoffrey Fieger said he filed the $100 million lawsuit against the Oxford Community School District and school employees on behalf of the parents of Riley Franz, a 17-year-old senior and honor roll student who suffered a gunshot wound to the neck; and Bella Franz, a 14-year-old freshman and star athlete who was next to her sister during the shooting.

>> Michigan school shooting: Suspect pleads not guilty to killing 4, injuring 7 at Oxford High School

“These are two ultimately beautiful children who now are going to have to go back to a school that they know was attacked and is a war zone,” Feiger told reporters.

Thursday, hundreds of people gathered for Shilling’s funeral in Oxford, the Free Press reported. Shilling died on Dec. 1, one day after the shooting.

>> Related: Superintendent: Discipline not needed for teen before Michigan school shooting

Students, with the exception of those who attend Oxford High School, will return to classes on Friday, ABC News reported. The half-day is part of a “safe, slow and soft re-opening,” and there will be an increased law enforcement presence, therapy dogs and trauma specialists, Oxford Community Schools Superintendent Tim Throne said in a letter to families on Thursday.