Joe McKee and Nathan Austin help Falkirk win in Inverness as Hearts, Dunfermline and Dundee secure League Cup victories.
Scottish League One Football
Motherwell put four past Morton, Kilmarnock win at Annan and the rest of the League Cup action in Groups E, F and G.
Steven Lawless and Blair Spittal score twice as Partick Thistle thrash St Mirren while group rivals Livingston beat Airdrieonians.
Ayr United beat Dumbarton, plus the rest of the League Cup action from Groups E & F.
Audio & Video
Lewis Morgan scores a second-half double as St Mirren battle past League One East Fife to reach the last eight in the Scottish Cup.