It's a somber day in Worcester as the city marks the 15th anniversary of a blaze that claimed the lives of six firefighters.

A ceremony is scheduled for later Wednesday at the Franklin Street Fire station, which sits on the site of what was once the Worcester cold storage warehouse.

The fire that investigators said was started by two homeless people destroyed the building On Dec. 3, 1999.

Lt. Thomas Spencer, Lt. Timothy Jackson Sr., Lt. James Lyons III, and firefighters Jeremiah Lucey, Paul Brotherton and Joseph McGuirk died after becoming trapped in the inferno.

A moment of silence is scheduled for 6:13 p.m., the moment the first alarm was sounded.

A scholarship fund established in memory of the firefighters has raised $644,000 and awarded 266 scholarships to Worcester high school students over the years.

 [Associated Press]