Tucson police say to avoid Grant Road near Tucson Boulevard Tuesday evening due to an armed robbery nearby.In a tweet TPD said shots were fired at about 3:30 p.m. There are no reports of injuries at this time.That suspect has now barricaded himself nearby, according to TPD.Police say both vehicle and pedestrian traffic are shut down on Grant Road “for an extended period.”KGUN 9 will be following this story as it develops.