Train services have resumed on three key train lines, after lengthy peak-hour delays.
Trains on the Alamein, Belgrave and Lilydale lines were suspended between Burnley and Camberwell stations after an incident involving emergency services at Hawthorn station just after 2pm on Thursday.
Buses replaced trains between the two stations, causing lengthy delays for commuters.
The lines were re-opened about 5.30pm, but commuters heading home still experienced delays of up to an hour.
By 7.30pm, delays had reduced to 20 minutes, Public Transport Victoria said.
UPDATE Burnley Station: Due to ongoing incident, significant wait times are expected for replacement buses. https://t.co/NUBM4OMjRl
— Metro Trains (@metrotrains) April 6, 2017
A long queue for buses had formed at Camberwell station by 4.30pm. Commuters were also facing a lengthy wait for buses at Burnley station, with one woman saying the line was nearly a kilometre long by 5pm.
@metrotrains I'm not complaining but just want an eta on buses arriving at burnley? I'd say the queue for buses is close to a km long
— Humphreysmum (@NicoleLaka) April 6, 2017