The pair of pipe bombs found at the DNC and RNC headquarters on January 6 were planted the night before the deadly assault on the U.S. Capitol, the FBI announced on Friday.

In a wanted poster, the FBI said that it has learned new information about the bomber, stating that the bureau now believes the still-at-large suspect planted the devices between 7:30 p.m. and 8:30 p.m. (EST) on January 5 at both political parties’ headquarters.

The bureau has increased its monetary reward to up to $100,000 for information leading to the location, arrest, and conviction of the individual—or individuals—responsible for the placement of these pipe bombs.

The wanted poster, which shows what appears to be a still photo of the suspect from security footage, says the person “wore a face mask, a grey hooded sweatshirt, and Nike Air Max Speed Turf shoes in yellow, black, and gray. The individual carried a backpack in their hand.”

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As the mob descended on Capitol Hill on January 6, the pipe bombs were discovered within minutes of each other around 1 p.m. before they could be detonated.

The bombs were eight inches in length and constructed out of galvanized steel, according to a law enforcement official, CNN reported Wednesday. The devices had been rigged to egg timers and packed with an explosive powder, the official said. Currently, investigators are examining the remains of the bombs at the FBI lab in Virginia.

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