Police are currently carrying out searches in Craigavon as part of an investigation into dissident republican activity.
The searches are taking place in the Tullygally Road and Drumbeg areas.
The Tullygally shops themselves are not part of the searches but access to them is closed.
Upper Bann MLA Carla Lockhart said that there was "significant PSNI presence in the area".
"It is significant in scale so there is traffic disruption and a heavy police presence," the DUP MLA said.
"I've been with the PSNI this morning and they are working hard to keep our communities safe."