Attorney General Jeff Sessions condemned the attempted pipe bomb attacks Thursday morning “in the strongest possible terms” and promised justice for the person or persons responsible.

“Across the administration, we condemn the actions that led to these activities in the strongest possible terms,” Sessions said before speaking at an opioids event at the Justice Department.

[READ: Pipe bombs scare: Here's what we know]

In his remarks, he said that the DOJ, FBI, and Bureau of Alcohol, Tobacco, Firearms and Explosives are working together on the incidents and federal law enforcement is “determined to get to the bottom of it.”

“I want to thank all of our law enforcement officers who have undoubtedly saved lives this week and are working around the clock,” Sessions added.

Sessions said that he briefed President Trump on Wednesday, along with FBI Director Christopher Wray, and FBI Deputy Director David Bowdich, but did not provide any other details.

A Justice Department source told the Washington Examiner that around 11 a.m., the FBI would again brief the attorney general.

As of Thursday morning, there are at least known 10 suspicious packages sent to various former and current politicians and government officials — all whom have traded public barbs with the president.

None of the devices detonated, unless by authorities, and there have been no injuries or deaths as a result of the packages, but the scare has shaken both the political world and the media.