Police are probing a serious assault on the Glasgow to Gourock train at Port Glasgow just before midnight.
It is understood British Transport Police are dealing with the incident.
Officers were also called to West Station in Greenock at 1am this morning over reports of a concern for the safety of a man.
A police spokeswoman said:"Officers attended at Greenock West Station at 1am after calls from members of the public.
"Officers attended, along with negotiators.
"The man was taken to Inverclyde Royal Hospital."
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