A gunman shot and killed eight people and wounded at least seven others at a busy mall north of Dallas on Saturday, police said.

The gunman, whom authorities said they think acted alone and whose motive was not yet known, was killed by a police officer after he began firing outside of the Allen Premium Outlets mall in Allen, Texas, the city’s police chief Brian Harvey said at a press conference.

Allen fire department chief Jon Boyd told the same press conference that his department took at least nine victims with gunshot wounds to area hospitals.

Two of those people died at the hospital, Boyd said at a second press conference Saturday night. Three of the victims were in critical condition and four others were stable.

Medical City Healthcare, which runs 16 hospitals in the area, said in a statement that its trauma centers were treating eight of the wounded victims, who ranged in age from 5 to 61.

Collin County Judge Chris Hill, the top elected official in the county where Allen sits, praised police and other first responders at a press conference, but expressed deep anger with “those that would do evil in our community, in our backyard.”

Separately, police in the nearby city of Frisco, Texas, said they had evacuated the Stonebriar mall late Saturday after receiving reports of shots fired there. It was not yet clear if a shooting had actually taken place.

The shooting sparked panic at Allen Premium Outlets, a sprawling shopping complex in Allen, 25 miles (40 kilometers) north of Dallas, filled with weekend shoppers.

A police officer was in the mall on an unrelated call when gunfire broke out around 3:30 pm (2030 GMT), said chief Brian Harvey of the Allen police department.

“He heard gunshots, went to the gunshots, engaged the suspect and neutralized the suspect,” Harvey said. “He also then called for ambulances.”

The identity of the shooter was not released. His body, sprawled on a sidewalk, was one of the seven deaths at the mall when more police arrived.

Among the wounded at area hospitals, “three are in critical surgery, and four are stable,” Boyd, the fire chief, said.

Some of the victims were as young as five years old, a hospital official told NBC News.

Texas Governor Greg Abbott called the mass shooting an “unspeakable tragedy.”

President Joe Biden “has been briefed on the shooting,” a White House official told reporters.

Local officials hailed the actions of the police officer who charged and killed the shooter.

“We owe a debt of gratitude to first responders that ran toward the gunfire and acted swiftly to neutralize the threat,” said Keith Self, a Republican congressman whose district includes the city of Allen.

Video footage aired by CNN showed the shooter getting out of a sedan in the parking lot of the mall, and beginning his rampage.

Authorities believed initially that a second shooter might be on the loose. As police combed through stores in the mall, frantic shoppers and store employees rushed into parking lots.

Harvey later said police believe the unidentified shooter, who CNN said was wearing tactical gear, “acted alone.”

Janet St James, a spokesperson for Medical City Healthcare, which operates multiple trauma facilities in North Texas, said it received eight patients from the shooting, ranging in age from five to 61, NBC News reported.

A father who arrived at the mall after his daughter, who was inside, phoned to tell him about the shooting, also told CNN that police had informed him there may have been a second shooter.

“We saw the police outside the door, and they told us we had to go, and that they are still looking for the person,” Jaynal Pervez said, according to CNN.

“There’s no more safe places. I don’t know what to do.”

Pervez later told broadcaster CBS that scenes in the mall parking lot were chaotic.

“I saw the shoes around there, people’s cell phones on the street,” he said.

Sooting everywhere

TV aerial images showed hundreds of people calmly walking out of the mall, located about 25 miles (40 km) northeast of Dallas, after the violence unfolded, many with their hands up as scores of police stood guard.

One unidentified eyewitness told local ABC affiliate WFAA TV that the gunman was “walking down the sidewalk just … shooting his gun outside,” and that “he was just shooting his gun everywhere for the most part.”

Blood could be seen on sidewalks outside the mall and white sheets covering what appeared to be bodies.

Texas Governor Greg Abbott, calling the shooting an “unspeakable tragedy,” said in a statement that the state was prepared to offer any assistance local authorities may need.

Allen, Texas, is a community of about 100,000 people.

Mass shootings have become commonplace in the United States, with at least 198 so far in 2023, the most at this point in the year since at least 2016, according to the Gun Violence Archive. The nonprofit group defines a mass shooting as any in which four or more people are wounded or killed, not including the shooter.

With more firearms than inhabitants, the United States has the highest rate of gun deaths of any developed country – 49,000 in 2021, up from 45,000 the year before.