The incident took place at around 9.10pm, close to the Milton area of Dumbarton, between Dumbarton Central and Bowling stations.
British Transport Police say there are no suspicious circumstances and a report will be forwarded to the procurator fiscal.
More to follow.......
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article