Bus services on a number of routes in Dublin have been disrupted because of unofficial industrial action at the Harristown depot.
Drivers are understood to be unhappy at new schedules recommended by the Labour Court which were due to come into effect today.
Dublin Bus apologised to customers for the disruption to services on the following routes:
4/4a Ballymun to Blackrock/Stradbrook
13/13a Ballymun to Merrion Square
17a Finglas to Kilbarrack
27b Eden Quay to Harristown via Beaumont Hospital
40a/b/c/d Finglas to City Centre
33b Portrane/Donabate to Swords
102.Sutton Station to Airport via Swords
128 Baldoyle to Rathmines
83 Finglas to Kimmage
237 Blanchardstown to Castleknock
238 Blanchardstown to Tyrellstown
270 Blanchardstown to Dunboyne
140 Finglas to Leeson Street
Trade union Siptu said the action at Harristown was not an official action and is not associated in any way with the union.