This afternoon, a grand jury in Los Angeles indicted Nipsey Hussle's alleged killer Eric Holder on four charges, murder, two counts of attempted murder, and possession of a firearm by a felon.

The LA district attorney had already charged Holder with those exact charges.

So why go to a grand jury? 

TMZ explains:

As for why the D.A. chose to go to the Grand Jury when they had already charged Holder, the main function is to skip the preliminary hearing. The D.A.'s office will not say why they chose to jump the prelim -- where a judge must find probable cause of a crime in order to make the defendant stand trial -- but it's sometimes done if there's a problem with the evidence.

Hmm. A problem with the evidence doesn't sound good ...