Commuters are facing delays after a dog is causing disruption on some of the train lines.

The animal was spotted on a track near Northfleet and is causing problems for people travelling between Gravesend and Dartford.

Customers tweeted Southeastern asking why their trains coming to and from London had been delayed.

The train company confirmed the incident on their social media.

They tweeted: "Due to an animal on the line near #Northfleet, services between Gravesend and Dartford may be delayed."

Train services running through these stations may be cancelled or delayed. Disruption is expected until 4pm.

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