Taoiseach Leo Varadkar plans to visit the Dublin communities living in fear after three daytime gangland murders in recent days.

Gardaí fear that there could be more violence after a third murder in seven days in north Dublin.

Gardaí believe that a man shot dead in north Dublin this afternoon is an Iranian national and suspected hitman for a major organised crime gang.

Gardaí have appealed for a man in his 20s, a taxi driver, and a couple who were at the scene of a fatal hit and run to help them with their investigations.