One man was slashed across the face and another was hit on the head with a hammer on the same night at a Sheffield pub, which now faces losing its licence.
The Terminus Tavern in Darnall had its licence suspended following the attacks on Sunday, April 30, forcing it to close.
Those assaults came one week after a fight broke out during a 50th birthday party at the pub, when glasses were thrown and people had to be ushered into the kitchen for their safety.
Councillors are set to decide at a review hearing on May 30 whether the pub should be allowed to reopen or have its licence revoked.
South Yorkshire Police, who applied with Sheffield Council for the licence to be suspended, would not previously go into details of why it had done so, saying only that it was down to concerns about 'serious crime or disorder'.
But the agenda for the meeting on May 30 explains how the review was prompted by the twin attacks on April 30, which officers believe are linked to local family disputes.
Police said they were called to the pub in Main Road that evening just after 11pm, where they found one man with a severe slash wound to his face and head and the other having been hit on the head with a hammer.
One of the men was attacked at the bar and the other outside the pub as he was about to get into a taxi.
Police said neither victim is willing to make a formal complaint but officers have identified the suspects and are searching for them.
The pub's licence holder Tansy Bagshaw said the pub hosted a prize-giving ceremony for its football team and celebrations for Sheffield United's promotion on the night of the attacks.
She told how one week earlier a fight had broken out involving a 'trouble maker' who is 'known for guns and knives' and 'only a few weeks ago shot himself'.
Following that incident, she said staff were on the look out for strangers on April 30 but there had been no trouble until around 11pm when most people were leaving the pub.
It was at that point she said someone shouted to her 'Tansy it's kicking off'.
"I looked up and over the bar and saw a man laid on the floor with a pool of blood around his head," she wrote.
She said she told a barmaid to call the police, which she did, and a regular customer who is a nurse had administered first aid to the victim.
Four young men then pushed their way into the pub, one of whom was waving a knife in the air, and tried to get the man with the hammer out of the pub, she says.
CCTV shows the man being slashed outside the pub after going to help his friend who had been knocked to the ground by the four strangers, adds Ms Bagshaw.
She said the man who committed the hammer attack had never been in the pub on that night or any other, and there is no way she could have prevented what she described as a 'targeted' attack.
"There was no build up to the incident and it does not appear to have been alcohol related," added Ms Bagshaw, who says police and ambulance crews took 24 minutes to arrive that night.
"We have a lovely set of customers and don't know how we could have prevented this incident from happening."
The pub's licence was last reviewed in 2014, when it was allowed to remain open but only if it complied with a number of conditions.
Since then police said eight incidents, involving a combination of assaults and rowdy behaviour, have been reported at the premises
Police say they do not feel the licence conditions are being adhered to and they have raised concerns about the management of the pub.