Customers were not allowed out of the back of a Toby Carvery when emergency services swarmed the area.
Merseyside Police, paramedics and the fire service were called to the scene at Carr Mill Dam on Garswood Old Road, St Helens at around 12.30pm today (June 1) after receiving a report of a concern for the safety of a teenage girl.
The incident is ongoing and people have been asked to avoid the area.