Details only deepen mystery surrounding Kalamazoo shootings

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More details are emerging about the night authorities say a Michigan man has admitted gunning down six randomly chosen victims in and around Kalamazoo. But any hint as to why remains stubbornly elusive.

Authorities allege Jason Dalton carried out the attacks over hours during which he also ferried passengers around town as an Uber driver. The 45-year-old appeared briefly in court by video link and was charged Monday with six counts of murder.

Kalamazoo police Det. Cory Ghiringhelli told the court Dalton admitted to investigators "that he took people's lives."

The admission seemed only to deepen the mystery of what was behind the killings of six people with no apparent connection to the gunman. Police and prosecutors acknowledge a motive may never be fully known.