One man was hospitalized and two others were in custody after a suspect was shot by federal agents in the parking lot of a Chevy's restaurant in Richmond during an undercover sting, authorities said Wednesday.

An agent with the Bureau of Alcohol, Tobacco, Firearms and Explosives was trying to buy guns as part of an undercover investigation, when the suspect pulled a gun and threatened the agent, ATF spokeswoman Helen Dunkel said.

The suspect was shot when ATF agents working as the "cover team" moved in, she said.

"An undercover agent was attempting to buy firearms when one of the suspects pulled out a gun and threatened his life," Dunkel said. "He (the suspect) was basically trying to rip him off. The actions of the suspect caused the actions of the cover team."

Dunkel could not say how many times the suspect was hit, or if any of the suspects returned fire. No ATF agents were hurt.

An ATF shooting review team will conduct an internal review of the shooting, a routine procedure during any agent-involved shooting, Dunkel said.

The two other suspects were taken into custody shortly after the 3:15 p.m. incident. The suspects' names have not been released. Agents also recovered several guns, Dunkel said.

The condition of the wounded suspect was not known, but Richmond police spokeswoman Lt. Bisa French said his wounds were not considered to be life-threatening.

Richmond police were not part of the undercover sting but federal agents had notified them of the operation, French said.

The Chevy's restaurant where the shooting took place was closed for the night so agents could investigate the parking lot shooting, said Matthew Baizer, director of operations for the chain.