Shots fired in a Nottingham nightclub may have been because of a grudge against one of the victims, police say.
Officers said the incident was not a random attack
Two men and a woman were injured in the shooting at the Edge club in Lower Parliament Street just before 0400 BST on Sunday.
The casualties were taken to the Queen's Medical Centre but their injuries were not life threatening.
The club is closed and an investigation is under way. Officers are examining CCTV images from the nightclub.
Last month armed police patrols were sent to the St Ann's area of the city following three shootings there.
But overall gun crime in the city had fallen over the last two years, police said.
Figures released in April revealed officers dealt with a total of 298 offences last year - compared with 442 the year before.
Shootings involving the most serious firearms were also down from 42 in 2004 to 11 in 2005.
Ch Supt Pete Moyes said he wanted to reassure the public that the latest shooting was not a random attack.
"A firearm was discharged in a nightclub, which means that someone purposefully went out with a gun intent on using it," he said.
He urged taxi drivers, takeaway owners and anyone in the area at the time of the attack to come forward.