The Secret Service is facing intense scrutiny over its inability to prevent an assassination attempt on former President Donald Trump in which one of his supporters was killed.

That scrutiny may ratchet up further following the release of a report detailing how another Secret Service failure put Vice President Kamala Harris at risk from a bomb. 

Secret Service dogs did not find bomb

According to the Washington Examiner, the 81-page document reviews how Secret Service personnel handled the January 6 riot on Capitol Hill.

That included their response to a pipe bomb which was placed outside of the Democratic National Committee (DNC) headquarters, where Harris visited shortly before noon.

While the area was cleared by Secret Service agents using bomb sniffing dogs, the explosive device was not discovered prior to her arrival.

The report further explained that the Secret Service did not deploy all of its explosive detection measures and that the pipe bomb was only later found by officers with the United States Capitol Police (USCP).

Bomb planter's identity remains unknown

"Two USCP plainclothes agents who were searching the DNC building after a similar device was discovered at the Republican National Committee building ultimately discovered the pipe bomb 1 hour and 40 minutes after the Vice President-elect’s arrival," the report read.

"The two USCP agents notified the Secret Service, who then evacuated the Vice President-elect from the DNC building," it added.

While security cameras appear to have captured images of the person who placed the bomb at the DNC as well as another device at the Republican National Committee (RNC) headquarters, his or her identity remains unknown.

The #FBI has released a video of the person who placed pipe bombs placed near Capitol Hill between 7:30 p.m. and 8:30 p.m. on January 5. If you recognize this person’s gait, body language, or mannerisms, submit a tip at https://t.co/iL7sD5efWD. Tips can remain anonymous. @FBIWFO pic.twitter.com/tCqM6ipVZz

— FBI (@FBI) March 9, 2021

This is despite the fact that the FBI has conducted a years-long investigation into the matter and offered a half million dollar reward for information.

FBI asks public to come forward with tips

David Sundberg serves as assistant director in charge of the FBI Washington Field Office, and he addressed that fact in a January statement.

"Over the past three years, a dedicated team of FBI agents, analysts, data scientists, and law enforcement partners has worked thousands of hours conducting interviews, reviewing physical and digital evidence, and assessing tips from the public about who may have placed pipe bombs on Capitol Hill," Sundberg declared.

"We urge anyone who may have previously hesitated to come forward or who may not have realized they had important information to contact us and share anything relevant," he added.