Updated: According to King5 News, the “ongoing pattern robbery case” that police referred to, is the case of ten pharmacy robberies. Two people were taken into custody but released pending further investigation, police say.
Here is the King5 piece:

Tuesday: Officers investigating an “ongoing pattern robbery case” called in a SWAT team to detain two people in a residence in the 3000 block of NW 63rd late this afternoon. Like many neighbors, we observed officers with guns drawn in the area, as well as several news helicopters hovering over the scene. “A search warrant was served on a residence and two adult subjects, one male and one female, were detained,” police said.

A neighbor snapped this photo of the SWAT team. The police activity shut down NW 63rd between 30th and 32nd Ave. for a couple hours. “Robbery detectives subsequently interviewed and released both subjects pending further investigation,” police said. “This remains an active and on-going Robbery Unit investigation.” (Thanks Pong for the photo!)

Last weekend: SWAT team arrests man inside Ballard 7-Eleven