Seattle City Attorney Pete Holmes is vowing to crack down on illegal, black market marijuana businesses that he says are undercutting licensed retailers.

The Washington state Liquor and Cannabis Board estimates the black market makes up around 28% of the entire market. Legal retailers feel that estimate is low. "I'm not free to say all of the enforcement steps that are being engineered now. But Seattle is going to crack down," said Holmes.

Currently, 577 producer/processors and 228 retailers have been licensed by the state. That's produced around $65 million in taxes. Legal retailers say in order for legalization to be successful, the illegal sales must be addressed.

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