BLOOMINGTON, Minn. (AP) - The Bloomington city attorney has dismissed some charges against Black Lives Matter protesters stemming from a massive demonstration at the Mall of America in December. But other charges remain.

Black Lives Matters issued a statement saying that trespassing charges against the protest organizers were dismissed by the prosecution during a court hearing Wednesday. However, defense attorney Bruce Nestor says that charges of aiding and abetting the protest were not dismissed.

Reports say while mall officials told the group repeatedly over a loudspeaker that day that the demonstration was unauthorized, they forgot to use a key word: leave.

Bloomington City Attorney Sandra Johnson says for a good trespass case, "somebody in a position of authority must tell you you have to leave the property."