Police are investigating reports of threats being made to taxi drivers in north Belfast.
Taxi drivers have been warned there is a threat against them
Officers visited drivers and depots on Tuesday night to tell them of the threats.
It follows an attempt to shoot a taxi man at the weekend. That attack was admitted by the Red Hand Defenders - a cover name for the UDA.
One driver, who did not wish to be identified, said it was a very worrying development.
"Drivers are on real alert, we do work across the whole of north and west Belfast through Catholic and Protestant areas," he said.
"People are very, very edgy. It is disgraceful the way things are going, they are targeting people who are trying to make a days living."