charge against aaron hernandez for the execution-style of a man in june and now we re learning the same grand jury that s been investigating that case is looking into whether hernandez might be involved in gun trafficking. according to our sources, what they re looking at in part stems from the discovery of an assault-style weapon that was hidden in a vehicle. that was taken from florida to massachusetts. that s when the gun was discovered. now, why he is involved, might be involved, i should say, is another matter, but he was served with a subpoena. he s a center for the miami dolphins. he was served with a subpoena on sunday in foxboro after the miami dolphins finished playing the new england patriots. do we have any idea where this investigation s going from here? reporter: it will be interesting to see what, if anything, we learned after he presumably testifies before the grand jury.