Montana Mass Shooting Suspect Michael Brown Taken into Custody By Nicole Acosta

Michael Paul Brown, the suspect accused by police of opening fire inside a Montana bar and killing four people has been taken into custody, PEOPLE can confirm.

According to sources with knowledge of the situation, Brown was taken into custody behind The Ranch Bar just west of Anaconda on Highway 1.

The U.S. Marshals Service previously offered a reward of $7,500 for any information that led to the arrest or capture of the 45-year-old Brown.

Authorities allege Brown fatally shot a bartender and three patrons inside The Owl Bar in Anaconda, Mont., around 10:30 a.m. on Friday, Aug. 1, PEOPLE previously reported.

He then allegedly fled the scene wearing only a pair of black shorts or underwear, as seen in a photo later shared by the Montana Department of Justice on Facebook.

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Lee Johnson with the Montana Department of Justice previously said that authorities “located the white Ford F-150 that Brown fled the scene in,” though Brown was not found in or around the vehicle.

At a press conference on Sunday, Aug. 3, Montana Attorney General Austin Knudsen called Brown “a dangerous individual who has committed an absolutely heinous crime against this community and these victims.”

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The victims were identified days after the atttack as Anaconda residents: Daniel Edwin Baillie, 59, Nancy Lauretta Kelley, 64, David Allen Leach, 70, and Tony Wayne Palm, 74, per a press releaseshared by the Montana Department of Justice. Kelley was a bartender at the business, Knudsen confirmed.

Brown is an Army veteran who served in Iraq between 2004 and 2005, according to an Army spokesperson, per The New York Times. He also served in the Montana National Guard for about two years until March 2008, according to the outlet.