A Wyoming man wrestling at a mountain man rendezvous in Cache County died from a knife wound in the chest early Sunday morning, police said.

Tim Andrus, 33, of La Barge, Wyo., was wrestling with an acquaintance at the Old Ephraim Rendezvous in the Lefthand Fork area of Blacksmith Fork canyon when he was pierced in the chest, said Cache County Sheriff's Lt. Matt Bilodeau. Emergency crews pronounced him dead at the scene.

Allen "Hound" Hyde of Downy, Idaho, was called to the scene shortly after 1 a.m. by another camper who told the emergency medical technician that someone had a knife in their chest.

"I heard that the knife fell out of a sheath and he rolled over on it," Hyde said. "Everyone around here starts pushing and shoving and wrestling and just having a good time -- like these two -- at the rendezvous. It's just unfortunate that things happened the way they did."

No one was arrested, Bilodeau said. "We are still investigating this incident and until we come to a conclusion that we feel good about, we are going to keep going forward with the investigation."

Hyde said when he arrived at the scene, about a thousand yards from his tent, the knife had been removed, the wound was plugged and CPR was in progress.

Volunteers moved Andrus' body from the ground onto a collapsible table, which they loaded into the back of a pickup truck and drove a short distance to the rendezvous rifle range. The open field gave a medical helicopter room to land, Hyde said.

Ambulances from nearby Hyrum and Logan arrived before the helicopter and emergency response officials continued CPR compressions while Hyde helped them get IVs going.

"He [Andrus] showed a couple of heartbeats after the meds were on board, but from where the knife entered into the chest, I figured all the IV fluids and medications they were putting into him were just going into his lung cavity," Hyde said.

The knife went in just to the left of midline in the chest, at the bottom edge, Hyde said. "I knew it wasn't good. I suspect it probably nicked his heart."

Damian Hooten of Ogden and Tyrel Morse of Bountiful, both 14, assisted with traffic and crowd control during the emergency. Morse said he spent time Friday night with Andrus around a campfire "shooting the bull." Andrus seemed to be a really nice guy, he said.

"He was funny. He had a good sense of humor. He smiled all the time," Morse said. "Now we just need to be there for the family. We're all family up here."

Rendezvous leaders convened a campfire at about 3 a.m. Sunday, in large part to help the youth deal with the emotional aftermath.

The rendezvous was organized by the Old Ephraim Mountain Men and Women Club. It started Friday and runs through today.

Reporter Lindsay Whitehurst contributed to this report.