An Oregon man who allegedly stole and then tried to sell thousands of N95 masks on Craigslist has been taken into custody, Portland police said on Sunday.

According to a statement from the Portland Police Bureau, officers were first made aware of the theft when The Rebuilding Center, a sustainability nonprofit reported that 20 to 25 cases of N95 masks had been stolen from their center on March 6.

The next day, staff at the center discovered an advertisement listing the masks on Craigslist that were being sold in the nearby town of Beaverton, Oregon. The staff scheduled to meet with the seller and then contacted the Beaverton Police Department who arrived at the meet and arrested the suspect.

Vladislav V. Drozdek, 22, of Beaverton, was arrested and charged with first degree theft, KFI reports.