A firm which organised an event where four people were shot says it will not hold similar events in the future.
Three men and a woman were hurt after shots were fired early on Sunday at the Custard Factory in Birmingham, where an urban music event was being held.
Promoter Factory Events, which programmes events and is separate from the Custard Factory, said safety and security was its absolute priority.
The event was being held in a converted factory on the site in Digbeth.
The three men, who suffered gunshot wounds to their legs, and the woman, who was shot in the foot, were treated in hospital.
Police are to investigate possible licensing breaches following the incident.
The investigation will examine terms and conditions of the licensed event agreed with the West Midlands force.
It said the investigation would look at whether these were met by the event's promoters and licence holders for Space 2 at the site.
Space 2 is a separately-managed licensed premises within the wider auspices of the Custard Factory, police said.
Factory Events managing director Simon Jones said following the violence, it requested an immediate meeting with police to discuss their concerns and how it could help with their investigation.
He said: "Our absolute priority remains the safety and security of the public, staff and others who use the Custard Factory.
"For that reason, we have decided that we will not hold this type of event again."
Mr Jones added that Factory Events carried out a "full risk assessment" in advance of the event and it put in place "all the reasonable and normal measures for an event of this kind".
He denied claims there had been inadequate security at the event, saying it had been downgraded after the risk assessment when it became clear fewer people were expected to attend than originally expected.
This meant the number of security staff required was reduced proportionately, he said.
Mr Jones added: "Factory Events has provided safe, enjoyable music and entertainment for the last 15 years - this is a tragic one-off incident which we did everything to plan against.
"The Custard Factory - which was not associated with the management of this event or the premises on which it was held - provides a unique, creative space in Birmingham."
Police officers announced an expedited review of the premises licence for Space 2 on Tuesday.
The force was called shortly after 0100 BST on Sunday.