A new report released by a government watchdog group revealed that two senior Secret Service agents were "more likely than not" impaired by alcohol when they drove through a bomb investigation scene near the White House earlier this year.

The report, which was released by the Department of Homeland Security's inspector general on Wednesday, found that Marc Connolly and George Ogilvie ran up a "significant" bar tab during and after their colleague's retirement party before driving to the White House on March 4, reports The Wall Street Journal. Their tab included eight glasses of scotch, two vodka drinks, three beers and a glass of wine. The agents, however, denied getting drunk during their five-hour stay at the bar. Ogilvie also claims that some of the drinks on the tab were purchased for other people at the bar.

Once the agents left the bar just before 11 p.m., Ogilvie and Connolly drove near the White House grounds, where Connolly's car was parked. However, they came across several roadblocks and barricades which were set up after a woman said she dropped a bomb near a White House entrance. The suspicious package -- which turned out to contain a book -- was still under investigation at the time.

Surveillance video captured the agents using their vehicle to push a barrier out of the way as they approached the package.

Three other Secret Service officers who interacted with Ogilvie and Connolly at the scene said that they didn't smell alcohol or notice signs of intoxication. However, they did note that they thought something was "not right," the inspector general's report said.

"We have a situation," one of the officers told the watch commander, according to the report. The agents "aren't making any sense."

Nonetheless, no field sobriety tests were given that night and both men were allowed to drive their government vehicles home.

Following the report, Secret Service Director Joseph Clancy released a statement, saying, "I am disappointed and disturbed at the apparent lack of judgment described in this report. Behavior of the type described in the report is unacceptable and will not be tolerated," reports NBC News.

Both agents involved in the incident were placed on administrative leave, but Connolly announced his retirement before the report was released.