Police in Concord, North Carolina, say four people were injured when gunfire erupted in a crowd during an annual tree lighting ceremony Friday evening.

Concord Police Maj. Patrick Tierney, speaking during a press conference, said the shooting happened around 7:30 p.m. on Union Street near Corbin Avenue, just steps from the center of the event.

Police said that the shooting was between two suspects who were known to each other and identified 18-year-old Nasir Ahmad Bostic identified as one of the shooters.

Bostic, who was shot during the incident, was taken to hospital and listed in critical condition. Authorities said he faces multiple charges, including assault with a deadly weapon, and will be served arrest warrant upon release from the hospital.

The second suspected shooter, who police only identified as a juvenile, was also shot and is currently recovering in hospital listed in critical condition. Police said that the suspect will also be facing multiple charges, including assault with a deadly weapon.

A 17-year-old was identified as a third suspect and is facing criminal charges, including accessory after the fact and inciting a riot. They were not injured in the shooting, police said.

Emergency personnel from Concord Police, Concord Fire and Cabarrus County EMS were already on site for the ceremony and responded immediately.

In total, four people with gunshot wounds were taken to the hospital, with three of them being listed in critical condition and the other in stable condition.

Authorities said officers are reviewing video from the event and interviewing witnesses..

The department said more details will be released as the investigation develops.

Concord, a city of about 105,000 people, is located approximately 25 miles northeast of downtown Charlotte.

The investigation is currently ongoing.