A U.S. Border Patrol agent was injured Tuesday during a chase near the Arizona-Mexico border, authorities said. 

The agent was struck around 8 a.m. at the State Route 86 immigration checkpoint near Three Points, Arizona, just outside Tucson, U.S. Border Patrol said. 

CBP MIGRANT ENCOUNTERS ALREADY EXCEED 1 MILLION SINCE OCTOBER

The vehicle that struck the agent was being chased by the Tohono O'odham Police Department. The agent sustained non-life-threatening injuries and was flown to Banner University Medical Center. 

A U.S. Border Patrol agent stands on a cliff looking for migrants that crossed the border wall between the U.S. and Mexico near Sasabe, Ariz. A Border Patrol agent was struck by a vehicle near Tucson on Tuesday.  (Salwan Georges / The Washington Post via Getty Images / File)

The FBI and U.S. Customs and Border Protection's (CBP) Office of Professional Responsibility are investigating. 

Fox News Digital has reached out to the FBI and CBP. In a statement to KGUN-TV, the FBI said two people were inside the vehicle being pursued. 

One person was taken into custody when the car crashed and another remains on the loose.