A hail of gunfire that left 14 people wounded outside a nightclub in Arizona

AFP

A hail of gunfire that left 14 people wounded outside a nightclub in Arizona was apparently triggered by an argument between people waiting in line for a rap concert, police said.

"The 14th victim arrived at a local hospital this afternoon with a gunshot wound to the foot," said Mike Horn, a Tempe Police Department spokesman.

Horn said two of the shooting victims were in serious condition in the hospital, but none had wounds that appeared life-threatening, reports AFP.

The shots were fired shortly before midnight local time Friday (0700 GMT Saturday) at the popular Clubhouse Music Venue, where a rap music concert was under way, police said.

Police "believe an argument took place between a couple of groups in line for the concert. This quickly escalated to gunfire," said Horn.

"We believe this shooting is gang-related and investigators are still working to identify the additional suspects," he said.

A suspect was taken into custody after being stopped by a patrol officer in a vehicle leaving the area, and faces 13 counts of aggravated assault and one count of assisting a criminal street gang, he said.

Police were also searching for two black males in dark-coloured clothing seen fleeing the scene on foot after the shooting, he said.

The shooting came just days after a teenager identified as TJ Lane opened fire at a Chardon, Ohio high school, killing three people and wounding two.