The inner circle of Glasgow's Subway has been suspended due to a broken-down train. 

The Subway's maintenance team is currently working to resolve the issue, but it is unknown when the line will return to normal. 

The outer circle of the Subway is operating as usual. 

Glasgow Subway Travel wrote on X: "Apologies all, inner circle is currently suspended due to a broken-down train.

"Maintenance team is working to get it moving.

"Outer Circle is running as normal.

"Apologies for the inconvenience. Update to follow when service on Inner resumes."