Police in the North have described yesterday's bomb attack in Armagh as a "totally reckless" act that was designed to kill or wound police officers.
The device exploded under a stone bridge between Belleek and Newtownhamilton at around 5.30pm yesterday.
The road and bridge were badly damaged but no one was injured in the incident.
The PSNI has launched an investigation into the incident. A detailed examination of the scene is to take place today.
SDLP Assembly member Dominic Bradley condemned those behind the incident.
“It looks as if it was aimed at police travelling through the area,” he said. “The bridge itself is not a major piece of infrastructure which wouldn’t have been targeted, so they must have been using the bridge to disguise the device for passing police.”
Hitting out at those responsible, Mr Bradley added: “It was wrong in the past and it’s wrong today. It serves no purpose. The vast majority of people in south Armagh reject this sort of activity.”