A Dublin criminal who was one of the last people to come into contact with murdered teenager Conor O’Brien has been arrested armed with a firearm in a hotel reports sundayworld.com.

Detectives

Conor O’Brien

are now quizzing the suspect about the teen’s murder after having the firearm technically examined to determine if it was the murder weapon.

Gardaí had already taken a statement from the 50-year-old after it emerged that he interacted with Conor O’Brien (19) just hours before he was shot dead last week

It can be revealed that the criminal was detained last night after gardaí were called to an incident at a hotel in Graiguecullen, near Carlow Town.

It’s understood that at around 10pm the man produced a firearm inside the premises following an argument before local gardaí were alerted and rushed to the scene.

He was subsequently arrested and the firearm recovered.

Following inquiries, it emerged that the individual was the Dublin criminal that gardaí had previously spoken to about the murder of Conor O’Brien, and detectives at Trim were notified.

The man, originally from south Dublin, remains in garda custody for firearms offenses and can be held for up to three days.