Searchers are combing Mount Si for signs of a skydiver who went missing Thursday afternoon after jumping out of a helicopter near the peak’s summit.

Around 2:30 p.m., a helicopter pilot called for help, reporting that a man, 29 years old and from Florida, had skydived out of his helicopter and did not show up at the landing zone after the jump. The pilot said a group of three men were alternately going up in the helicopter to jump. One would jump while the others waited at the landing zone.

The men were on their second round of jumps when their companion disappeared. The pilot said the men were jumping from approximately 6,500 feet near a peak on the west side of the mountain, about 2,500 feet tall. Mount Si’s highest point is about 4,100 feet.

The men waiting at the landing zone said their line of sight was blocked, so they did not see the man when he jumped out of the helicopter.

The King County Sheriff’s Office Search and Rescue Unit started searching yesterday afternoon, called off the search after dark, and resumed their efforts this morning. Citizen tips have also been coming in this morning.

Approximately 75 members of the Sheriff’s Office Search and Rescue Unit were involved in the search.

Searchers have set up a command post near the Mount Si trailhead, where the parking lot has been closed until further notice because of the search.

The Mount Si Natural Resources Conservation Area, located near North Ben, is a popular recreation area along the I-90 corridor.

According to DNR, hikers are encouraged to visit other trails in the area including Little Si, Rattlesnake Mountain, Rattlesnake Ledge, and Twin Falls.