A woman was injured after falling 15feet into a concrete well at the front of Luton Town Hall in the early hours of Saturday.
The woman, who has not been identified, had to be rescued by firefighters.
It is believed she had been sitting on a concrete wall opposite the Duke of Clarence pub in Upper George Street when she fell into the well.
A man who went to her aid was also injured, according to Luton News reader Mohammed Raza who was at the scene at the time.
He said: “She’d just come out of The Duke of Clarence and sat on the railings, lost her balance and fell back down into the concrete well.
“Passers-by called the emergency services and some guys tried helping her by jumping down to her.
“One injured his ankle in the process.”
The pub, in Upper George Street, has a 24 hour licence seven days a week.
The manager, who didn’t want to be named, said: “I don’t think she came out of the pub.
“I understand she was very badly hurt and the lad who went to help broke his leg.”
Ambulance spokesman Gary Sanderson said: “We were alerted at 4.40am and a patient was taken to the Luton&Dunstable Hospital for further care.”
A council spokesman said: “We were sorry to hear of this incident at the weekend which is being investigated by the police.
“As far as we are aware nothing like this has happened since the Town Hall was built in the 1930s.
“Nonetheless we are now carrying out a health and safety review to establish if any additional safety measures may be necessary.”
A police spokeswoman said: “No crimes were committed and no further action was required on our part.”