Hopefully soon.

(CNN) — Within a day of the Oklahoma City bombing, officials had named their suspect: Timothy McVeigh. Within two days of the 9/11 attacks, investigators had zeroed in on al Qaeda as the perpetrator.

But as loved ones mourn the deaths of three people and dozens of others remain hospitalized from the dual bombings Monday near the finish line of the Boston Marathon, two questions continue to hound authorities: Who triggered the attack, and why?

On Wednesday morning, a federal law enforcement source with firsthand knowledge of the investigation told CNN that a lid to a pressure cooker thought to have been used in the bombings had been found on a roof of a building near the scene.

While such clues may move the investigation forward, they did not reveal whether the attack was an act of domestic or foreign terrorism.

Update: Cross your fingers.

Update: Even better, an image of his face.

Update: Unclear if they’ve identified him by name or just his face. Via breaking news headlines from Bloomberg.

• OFFICIALS BELIEVE BOMBING SUSPECT IDENTIFIED, CNN SAYS

• AUTHORITIES HAVE IMAGE OF SUSPECT W/BAG AT 2ND BOMB SITE:GLOBE

• IDENTIFICATION COMING FROM STORE SECURITY CAMERA, CNN SAYS

Update: Salon hardest hit.

Update: Shockingly, CNN left the “dark skinned male” fact out of their online story, although they said it on TV.

BOSTON, April 17 (UPI) — Investigators have identified a suspect in the Boston Marathon bombings that killed three and injured 175, an official source told CNN Wednesday.

The suspect, described as a “dark-skinned male,” was picked up on security camera footage from the Lord and Taylor department store along the marathon route, very close to the second explosion, the source said. Additional footage from a Boston TV station was also helpful, the report said.

Officials have scheduled a news conference for later Wednesday.

Earlier, investigators found a lid to a pressure cooker police said they think was used to make the bombs, CNN reported.