A pair of Secret Service agents, one a member of the president’s protective detail, are being investigated for crashing a car into a barricade outside the White House last week.

The March 4 incident occurred late at night, an agency report says. The officers were said to have been at a drinking party earlier that evening.

The Secret Service reported that an officer on duty that night wanted to detain the two involved in the accident. That official also wanted to administer a drug and alcohol test. Reportedly, another senior officer ruled that the two were to be let go without any sobriety tests performed.

This incident is just another spot of bad publicity for a troubled security service that recently saw director Julia Pierson resign over an increase in such incidents.