Earlier Tuesday, police released surveillance video of the teenagers. Late Tuesday, police said they are not sure what involvement, if any, the teens may have in setting the fire, but they have been cooperating with the investigation.
A $1,000 reward was offered for information about the fire.
A fire was set 9:15 p.m. Nov. 7 in the fabric department of the Walmart in the 2500-block of 75th Street.
Anyone with information is asked to call Naperville Crime Stoppers at 630-420-6006 or visit www.napervillecrimestoppers.com.