Crews spend 4th day looking for skydiver in Wash.

29-year-old Kurt Ruppert missing since Thursday

Headline Goes Here

NORTH BEND, Wash. - Rescue crews are spending their fourth straight day looking for a skydiver who vanished during a jump above Washington's Cascade foothills.

King County sheriff's Sgt. Cindi West says searchers were back out near 4,200-foot Mount Si east of Seattle at first light Sunday, hoping to find 29-year-old Kurt Ruppert of Lake City, Fla.

Ruppert hasn't been seen since he jumped out of a helicopter at 6,500 feet Thursday afternoon, wearing a special wing suit with fabric under the arms to allow him to glide like a flying squirrel.

Crews narrowed their search area on Saturday, based on data from Ruppert's cell phone and the helicopter's flight path, but still haven't found any sign of him.

Copyright 2013 by The Associated Press contributed to this report. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.