Security procedures at 3Arena have been heightened following the deaths of 22 people at an Ariana Grande concert in Manchester. Last week's bombing, at the end of the popstar's show, has left dozens of people with critical injuries.
The attack has prompted venues across the UK and Ireland to review their security arrangements. At the weekend, security was increased at Guns n Roses' concert in Slane.
3Arena have asked that music fans heading to Shawn Mendes' concert on Tuesday night "carefully review" some updated security restrictions.
Among the new rules; "backpacks, larger purses or bags are not allowed; only purses or clutches measuring 4.5in/11.4cm x 6.5in/16.51cm or smaller will be allowed."
A full body pat down search and/or metal detector search will take place prior to entry, and everyone will be asked to "completely" empty their pockets.
3Arena says it "encourages patrons to minimize jackets and additional layers when possible" and is advising people heading to the show that the extra security checks "will understandably take longer" than normal.