OLYMPIA, Wash. (AP) — Washington state marijuana enforcement officials say four of the 22 legal pot shops tested in an initial round of sting operations this month failed by selling to minors.

The state Liquor Control Board says two shops in Tacoma, Mary Mart and Emerald Leaves, and two in Everett, Green City Collective and Purple Haze, sold marijuana to people under the legal age of 21 during checks conducted last Friday to Monday.

The board is referring the store employees who sold the marijuana to prosecutors for potential criminal prosecution, and the stores could face a 10-day suspension or $2,500 fine.

The checks were conducted in Skagit, Snohomish, Kitsap, Pierce and Cowlitz counties using liquor board employees 18-to-20 years old.

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