MONTERAL -- Metro riders in Montreal were delayed Friday because of an unauthorized person on the tracks, according to the STM.

Service has since resumed, though the STM says some passengers will still experience delays through Friday evening. 

The transit network sent out their first alert to riders at around 2:30 p.m. announcing a significant delay on the Green Line between Berri-UQAM and Honoré-Beaugrand stations. 

A special bus route was set up to take passengers to-and-from destinations where metro service had stopped. 

Regular service resumed at around 4:50 p.m.