Lopez Barron arrested in connection with deaths of four police agents . Michoacan officials : Jose Alberto Lopez Barron a top leader of La Peña drug cartel . `` You ca n't go around shooting off guns , '' suspect tells reporters . We arrived at a small ranch called La Peña , and they gave us nourishment and refuge . '' Anyone who wants to sell drugs has to go through cartel , Lopez Barron says .
Lopez Barron arrested in connection with deaths of four police agents . Michoacan officials : Jose Alberto Lopez Barron a top leader of La Peña drug cartel . `` You ca n't go around shooting off guns , '' suspect tells reporters . Anyone who wants to sell drugs has to go through cartel , Lopez Barron says .