It's not a murder (yet)
However, it has not yet reached the level of murder. And as important as Fox2, WDIV Channel 4, WXYZ Channel 7, and The Detroit News think they are, they cannot make it a murder.
They can editorialize that it 'should' be a murder, say if the prosecutor refuse a police request for a warrant. They can decry the violence that should never occur but does so often strike our homes, neighborhoods, communities.
But it's not yet murder, even if someone confesses to being an accomplice (which is in itself very very strange.)
Murder is a legal term and a homicide, strangulation, shooting, slaying, beating death, or killing all turn into murder when, first, a prosecutor files a charge, and, second, when a jury or judge agrees with a verdict of murder.