(CBS/KCNC) LITTLETON, Colo. - Police and federal officers are trying to locate a man who has been described as a person of interest and a possible suspect following the discovery of a pipe bomb at the Southwest Plaza Mall in Littleton, Colo. on Wednesday.
The sheriff's office on Friday morning released new photos of the man, where he can be seen riding on a commuter bus on Tuesday.
In previous images the man is seen in the Southwest Plaza on Wednesday on the mall's security videotape shortly before the bomb and two propane tanks were found inside. He appears to be wearing the same clothing in all of the photos released so far, reports CBS affiliate KCNC.
"There's an urgency to find the individual for obvious reasons and we're using all available resources that we need in Jefferson County, and certainly our federal partners, to run down those leads and identify that person of interest in those photographs," Sheriff Ted Mink said on Thursday, reports KCNC.
Mink, along with the FBI and the Bureau of Alcohol, Tobacco, Firearms and Explosives told reporters Thursday they have received some tips about the photos.
Members of the Jefferson County Bomb Squad found the propane tanks and the pipe bomb inside the mall after a small fire broke out near the food court at about 11:50 a.m. on Wednesday. The mall was evacuated as a precaution and then closed for the rest of the day and several schools nearby were placed on lockouts.
Officials confirmed late Thursday the propane tanks were purchased at a nearby Target store.
The subject is described as a white male with graying hair and a silver mustache, wearing a dark-colored cap with a light colored logo on the front, gray and white horizontally stripped shirt, dark jacket with silver buttons, blue jeans, and dark colored shoes. Anyone with information about him is asked to call Jefferson County Sheriff's Office tipline at 303-271-5615.
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