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King County sheriff’s deputies arrested six people at a Shoreline house Thursday and seized black-tar heroin, methamphetamine, firearms, stolen property, a pipe bomb and $5,000 in cash, a sheriff’s spokeswoman said.

Deputies served a search warrant early Thursday in the 1300 block of North 169th Street after neighbors complained of suspicious activity at the rental house, including vehicles making short visits, Sgt. Katie Larson said.

The pipe bomb was determined to be unstable for transport and was detonated at the scene, Larson said.

Two firearms — a shotgun and handgun — were recovered, as were homemade blasting caps, she said.

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The stolen property included computers, power tools and musical instruments and equipment, all valued at more than $100,000, according to Larson.

Investigators say they believe the six suspects — three men and three women — traded drugs for items taken in car prowls and burglaries in the Seattle area. But they also were looking into whether the suspects stole items, Larson said.

Deputies previously served a search warrant on the house in August and arrested tenants with ties to white-supremacist activities, Larson said. In that case, deputies seized drugs, weapons, body armor and possible blasting caps, she said.

Other people were arrested Thursday, although one might be from the previous group, Larson said.

The house was cleaned up and the landlord rented it again, but it returned “right back to where it was,” Larson said.

Steve Miletich: 206-464-3302 or

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