A U.S. Secret Service agent assigned to former first lady Jill Biden's security detail accidentally shot themselves in the leg at Philadelphia International Airport on Friday morning, according to agency officials.

The incident occurred around 8:30 a.m. when the agent's service weapon discharged, causing what officials described as a non-life-threatening injury to the agent's leg. The agent was transported to a hospital for treatment.

Jill Biden was not present at the airport during the incident and no other individuals were injured, according to Secret Service officials. The former first lady's location at the time of the shooting was not specified.

The Secret Service characterized the incident as involving a "negligent discharge while handling a service weapon," according to agency spokesperson statements. The term "negligent discharge" typically refers to an unintentional firing of a weapon due to improper handling or safety procedures.

The Secret Service has opened an investigation into the circumstances surrounding the incident, which is standard protocol for any weapon discharge involving agency personnel. No additional details about the investigation or the agent's condition have been released.

Philadelphia International Airport operations were not disrupted by the incident, and normal security procedures continued throughout the morning.