FOUR units of Limerick Fire and Rescue Service have responded to a crash at the Mackey roundabout.
They were called out at 9.56am. Gardai and ambulance personnel are also at the scene.
It is understood to be a single road traffic collision. The extent of any injuries are unknown at this time.
AA Roadwatch tweeted: "Gardai are dealing with a collision on the M7 eastbound at J28 Castletroy. Take care on approach."