A US Secret Service agent accidentally shot himself while on duty during an operation involving former first lady Jill Biden, authorities said.The incident occurred when agents were providing security as Jill Biden was being escorted during an official movement. According to officials, the agent’s gun accidentally discharged, causing his injury.Emergency response teams at the scene provided immediate medical assistance. After this the agent was taken to the nearest hospital for treatment. He was at Philadelphia International Airport when the “negligent discharge” occurred, and was treated for a non-life-threatening leg injury before being taken to a hospital in stable condition.The Secret Service confirmed that the shooting was accidental and occurred while the agent was performing his duties. No one else was injured in the incident and Jill Biden was unharmed.The security operation continued without any interruption and Jill Biden’s event was not affected. The agency has not released the identity of the agent involved.The Secret Service has launched an internal investigation to determine how the gun turned out to be. Such reviews are standard procedure in cases involving accidental weapon use by federal agents.The Secret Service is responsible for protecting the President, Vice President, and their families, as well as other high-profile officials. Agents receive extensive training in firearms safety and operational protocols. They work for the US Department of Homeland Security (DHS) and have their roots in 1865 when they were created to combat counterfeit money. Today they investigate financial and cyber crimes, protect major leaders and events, and operate specialized units, including uniformed division officers, to protect the White House and other sites.