The man, 37, already was in custody of Bothell police, who arrested him Thursday morning after he reportedly refused to turn over his passport to detectives investigating her death.
Police had a search warrant allowing them to collect the passport, Bothell police Sgt. Cedric Collins said. The man refused and was arrested on suspicion of obstructing a police officer, a misdemeanor.
Later Thursday police obtained a search warrant that allowed them to collect the man's footprints. They'd previously gathered his fingerprints, DNA and financial records under other search warrants.
Investigators suspect the man is somehow involved in the death of Susann Smith, 37, who was found stabbed and bludgeoned to death in her home. They were getting divorced and were fighting over custody of their two children.
Smith's body was found Feb. 12 after she didn't show up for work at a Seattle software company.
More Local News Headlines
Golden age of aviation shines at Vintage Aircraft Weekend Lovick now supports delaying new courthouse construction Program gives Lake Stevens High sophomores exclusive welcome First in-patient hospice to open in county With school starting, Clothes for Kids opens for business Front Porch: Roaming Artistsí annual show Evergreen State Fair judging results No evidence of warning in school shootings, police say
Our new comment system is not supported in IE 7. Please upgrade your browser here.