The Boston man already awaiting trial for the triple shooting that killed Rochester police officer Tony Mazurkiewicz has pleaded not guilty in another triple shooting -- one that happened the previous day and killed two people.
Prosecutors say searches after the officer was killed turned up guns linked to the other shooting, July 20 in the North Clinton Avenue neighborhood.
Kelvin Vickers and two co-defendents were charged this week in that shooting.
Vickers and at least one of the other men are from Boston. It's not clear why they were in Rochester.