Police were contacted at 8.30pm yesterday (14 November) by a member of the public with concerns for a man "believed to be at risk from another person or people" inside the former Laurel Hotel, now the Springfield pub, on Borough Road in Middlesbrough.
A spokesman for Cleveland Police told The Morning Advertiser: "As is routine when weapons are mentioned by a caller, armed police attended the pub, arriving to a large scale disturbance.
"Officers required those present to leave while armed response vehicles and response and dog section officers remained in the area searching for named individuals."
Number of arrests made
According to police a number of arrests have been made, although the number has not yet been confirmed, with more expected to follow as inquiries continue.
There are no reports of any injury to the wider public and there is not currently believed to be any risk to the wider public.
More to follow.