PONTIAC (AP) – A fire in the press box area of the decaying Pontiac Silverdome in suburban Detroit is being called arson.

Waterford Regional Fire Department Assistant Chief Matt Covey tells The Oakland Press of Pontiac for a story Friday that it appears someone intentionally started the blaze in a storage room.

READ MORE: Consumer Alert: How To Avoid Fake N95, KN95 Masks

It was discovered Tuesday morning by security personnel.

Covey says the “room was still full of old Silverdome merchandise such as pamphlets, books and other items that were combustible.”

READ MORE: Flint Public Schools Staying Virtual Indefinitely Due To Large Amount Of Positive COVID-19 Cases

Covey has said it was the first fire reported at the stadium since 2012.

The Silverdome opened in 1975, north of Detroit. The Lions played football there until 2002, and the Detroit Pistons spent a decade playing basketball in the stadium.

Officials last year announced that the Silverdome would be demolished.

MORE NEWS: State Fears Confusion After Michigan Restaurant Wins In Dining Ban Case

© Copyright 2016 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.