Trains have been suspended for the Sunshine Coast and Caboolture lines this morning with commuters being warned to expect major delays.

Translink is advising that services could be delayed by up to an hour in both directions.

Caboolture line trains suspended: Lawnton-Virginia. 60 minutes delays. https://t.co/v3kCUKfWEi #TLAlert #TLCabooltureline

— TransLink (@TransLinkSEQ) August 28, 2016

Sunshine Coast line trains may experience delays of up to 30 minutes. https://t.co/v3kCUKfWEi #TLAlert #TLSunshinecoastline

— TransLink (@TransLinkSEQ) August 28, 2016

A signal fault between Lawnton and Virginia stations is being blamed.

Alternative transport is being arranged to transport customers.