A flash grenade accidentally went off inside the garage at Federal Plaza in Lower Manhattan, injuring an FBI special agent Wednesday afternoon, the agency said.

The FDNY, NYPD and Homeland Security officers responded to 26 Federal Plaza after the flash grenade went off just before 1:20 p.m., according to officials.

"...There is no threat to public safety at this time," the FBI said in an emailed statement.

The FBI agent accidentally discharged the flash grenade inside his department vehicle while in the parking garage, according to law enforcement sources and the FBI.

The agent was taken to Bellevue Hospital Center in stable condition with right hand and wrist injuries, sources said. His injuries were considered non-life threatening, according to the FBI.

"We have no further information to provide regarding the agent's condition," the FBI's statement said.

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A flash, or stun, grenade is a non-lethal device that makes a loud sound and produces a flash of light designed to disorient a target.

With Lauren Cook, Nicole Brown and Pervaiz Shallwani