A postal worker was shot by an agent with the U.S. Postal Service Office of Inspector General on Wednesday outside a post office in Virginia, official said.

The U.S. Postal Service Office of Inspector General said in a statement that one of its special agents was involved in a “critical incident” shortly after 9 a.m. in the 10 block of N. Church Street, the location of the post office in Lovettsville, in Loudoun County. Officials said the agent discharged his firearm and shot a postal employee in the parking lot.

The employee was taken to a hospital with injuries not considered life-threatening, according to Loudoun County Sheriff’s Office spokesman Kraig Troxell. The sheriff’s office is investigating the incident with the Office of Inspector General, Troxell said.

No other information about the shooting was being released Wednesday, as officials said it is an ongoing investigation.

Lovettsville is a town of about 1,600 people about 50 miles northwest of Washington.