Four people, including a deputy and a shooting suspect, were taken to the hospital after a gunman opened fire at the Tri-State Fair & Rodeo in Amarillo, Texas, on Monday.

The suspect is in police custody as law enforcement officials continue investigating the shooting.

The Pottery County Sheriff's office confirmed that the suspect fired a volley of shoots within the fairgrounds just before 11 p.m. Monday. The gunman struck several vehicles in the area, according to NewsChannel10.

The scene of revelry turned into "pure chaos" as the shooting unfolded, a witness reportedly said.

The gunman shot at Potter County deputies that were working off-duty at the fair, according to Pottery County Sheriff Brian Thomas. The deputies returned fire and shot the armed suspect.

Two first responders — an off-duty deputy and an off-duty firefighter — working at the fair were shot in the gunfire. A bystander also sustained gunshot wounds.

The suspect suffered serious injuries and was taken to the hospital, according to ABC 7. The bystander, firefighter and deputy were also taken to the hospital with non-life threatening injuries.

Videos were shared on social media following the shooting at the Tri-State Fair.

One fair-goer, Rocky Valdez, said he was near the "Power" ride when he heard multiple gunshots being fired.

"Anybody else hear about gunshots at the Amarillo Fair tonight ... hope everyone is ok," Valdez wrote on Facebook.

See posts, photos and more on Facebook.

Jonathan Archer spoke to ABC 7 and said his father was running a concession stand when the shooting unfolded. The father and his 13 employees were unharmed but are shaken over the incident.

"He said it was just chaos whenever it happened," Archer told the outlet.

His father saw the sight of the deputy lying on the ground before they were told to take cover, Archer added.

The Tri-State Fair, which is spread over several days, is a way of raising money that is later pumped back into the community.

One of the ways in which the money is used is by providing scholarships worth $40,000 to local students each year, according to NewsChannel10.

More than 130,000 revelers attend the nine-day fair, according to Brady Ragland, the CEO of Tri-State Exposition.

Ragland also described the fair as the largest family-oriented event in the Panhandle.

Representational image
Representational image (Source: Pixabay / tball)