More than 20 people were hurt when gunmen opened fire early Sunday morning at a popular arts festival in Trenton, New Jersey.
Police say there were a number of fights at the event before shots were fired.
The shooting started just before 3 a.m.
"All of a sudden about ten shots rang out slightly inside the door. It was like... Pow pow pow pow pow pow pow pow pow pow," one witness said.
Police estimate as many as 1,000 people were in the area when the shooting started. More than 20 people were hurt; 17 of them suffered gunshot wounds.
"The preliminary investigation reveals that multiple individuals attending the art all night event opened fire within the venue and to this date and time, multiple weapons have been recovered," Mercer County prosecutor Angelo J. Onofri said.
Investigators say one suspect, a 33-year-old male was killed by police and another suspect is in police custody.
"The shooting appears to be related to several gangs neighborhood gangs from here in the city of Trenton having a dispute at the venue," Onofri said.
This happened at a popular fundraiser for local artists.
"Art All Night has become a tradition, quite a touchstone here in Trenton and it's just awful that it was broken up like this so awfully in the middle of the night," New Jersey Governor Phil Murphy said.
Police are also investigating an attempted car jacking that occurred in a nearby alley and are working to determine if it's connected to the shooting.