Says the Seattle Times:
A SWAT team has arrested a relative of Clemmons who is believed to be helping him. Police are at a location near Renton but have asked media not to disclose the address.
A short video clip of the scene in Renton from KOMO:
UPDATE 8:15: On Twitter, the Times' David Boardman, who's been posting excellent updates all day, says, "Police: Friends, kin lied to mislead cops. 'If they are going to impede our investigation then they become a part of the investigation.'"