The Marin Boy Scout community, family and friends are mourning the death of a scoutmaster who suffered apparent heat exhaustion during a Boy Scout outing and later died at Kaiser Permanente Medical Center in Terra Linda.

Michael Kan, 49, of San Rafael, who was on a troop conditioning hike in the Lucas Valley Open Space Preserve, died at the hospital shortly after 2 p.m. Saturday when he went into cardiac arrest after exhibiting heat-related symptoms, San Rafael fire Battalion Chief Jason Hatfield said.

Michael Dybeck, scout executive and CEO of the Marin Council, Boy Scouts of America, said in an email, “This is a very difficult time for our scouting family. … Our thoughts and prayers are with the deceased’s family and we will continue to support them in any way that we can.”

Dybeck declined to comment on how many scouts were on the hike, but he thanked the emergency crews who responded and noted no scouts were harmed during the incident.

One of the hikers called 911 at about 12:45 p.m. after Kan appeared to have trouble breathing and seemed confused toward the end of the hike, Hatfield said. The group was on the Luiz Fire Road about a quarter-mile from the trailhead at Creekside Drive.

The group had started the hike at around 7 a.m., according to the incident report, Hatfield said.

Rick Lewis of San Rafael, whose son is a member of the troop that Kan led but did not participate in Saturday’s hike, remembered Kan as an outstanding father of two boys also in the troop.

“The love that he had for those boys, the closeness, the bond he had with them on every adventure, it was truly amazing,” Lewis said. “He made the time, found the time, spent the time. He was always there supporting them, going on adventures with those boys. It’s so sad that they’re not going to have that anymore.”