Gardaí are appealing for witnesses to the accident to come forward.

'Local Gardaí are advising motorists to be mindful'

'Our emergency workers can find themselves in dangerous and threatening circumstances'

'The man in his 20's was pronounced dead at the scene'

'The driver was arrested following a speed check operation in Co Monaghan'

'The proposed changes will also apply to the ramming of Garda vehicles'

'Emergency services attended the scene during the early hours of Sunday morning'