Los Angeles (CNN) -- Michael Jackson's nephew testified Thursday that he believes his uncle was murdered. T.J. Jackson, the youngest son of Jackson brother Tito, revealed his suspicion while being cross examined by an AEG Live lawyer in the Michael Jackson wrongful death trial. Jurors also heard him testify about the emotional devastation caused by Michael Jackson's death. "He was just everything," said T.J. Jackson, who shares guardianship of Michael Jackson's children -- Prince, Paris and Blanket -- with their grandmother. Michael Jackson's mother and his children contend his last concert promoter was liable for his death because it hired, retained or supervised Dr. Conrad Murray, who was convicted of involuntary manslaughter.
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NEW: "My mother was murdered for money ... I don't put that past anyone," T.J. Jackson says
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T.J. Jackson shares guardianship of Prince, Paris and Blanket with their grandmother
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Paris "in a tough spot, but we're loving her and doing everything we can," T.J Jackson says
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Paparazzi stalking makes "everything harder for the kids to grieve and to recover, he says
"Wherever my uncle was, Blanket was a foot away, My uncle was everything to @placeholder."