DETECTIVES were last night confident of tracking down a cold-blooded killer who sat in a pub for at least 45 minutes looking at his victim prior to shooting him dead.

A 23-YEAR-OLD man shot dead in a Dublin pub on Wednesday night is thought to have received a warning around a week ago from drug dealers he may have owed money to.

Gardaí have launched a murder investigation following a fatal shooting in Dublin’s south inner city last night.