The One-Word Billboard Put up in the Town of 8-Year-Old Victim That Says It All

The local chapter International Brotherhood of Electrical Workers (IBEW) union -- Local 103 -- in Dorchester, Mass., put up a billboard in honor of the Boston bombing victims, but especially for 8-year-old Martin Richard who was from the town and is the youngest of the three killed in the blast.

"Cowards," the billboard along I-93 taunted.

(Image: Local 103 IBEW via ABC News)

"It was Local 103's way of shouting out our feelings of anger: Cowards," business manager Michael Monahan told ABC News.

"No other word or words came to my mind when I heard of the tragic event downtown Boston on Patriot's Day when a family from our neighborhood was effected so tragically," Monahan continued.

The billboard was later updated to include other phrases like "Pray for Boston" as well.

(Image: Local 103 IBEW via ABC News)

As of Friday morning, officials have reported one of the suspects released in the FBI's official photos being fatally shot in on MIT's campus Thursday night. The other suspect remains at large and the area suburbs have been put on lockdown.

According to reports, the man being called "suspect 1" -- or the "black hat suspect" -- was killed in Watertown, Massachusetts. An MIT campus police officer was killed as well.

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Related:

• FBI Release Higher Quality, ‘Up Close’ Images of Boston Marathon Suspects
• Police Put Boston Suburbs on Lockdown, Public Transit and Business Shut Down as Massive Manhunt for Alleged Bomber Continues
• Officials: 1 Boston Bombing Suspect Killed in Shootout in Watertown, Mass., Massive Manhunt Underway for Second
• NBC: Boston Terror Suspects Have International Ties and Have Been in U.S. Legally for About a Year
• 'Looked Right At Me': Victim With Both Legs Amputated Wakes Up From Surgery and Confirms Seeing Bomber