Authorities are working to recover the wreckage of a plane crash in western Alaska that killed 10 people while investigators are trying to determine what caused the small commuter aircraft to go down in the icy Bering Sea.

The single-engine turboprop plane was traveling from Unalakleet to the hub community of Nome when it disappeared Thursday afternoon. The Bering Air plane was found the next day after an extensive search. Nine passengers and the pilot were killed.

Crews on Saturday were racing to recover the wreckage and the remains of those killed in the crash before expected high winds and snow.

Here are things to know about the plane crash, which is one of the deadliest plane crashes in the state in 25 years.

Bering Air serves 32 villages in western Alaska from hubs in Nome, Kotzebue and Unalakleet. Most destinations receive twice-daily scheduled flights Monday through Saturday.

“Our hearts are heavy with grief as we process this heartbreaking news,” Bering Air wrote in a statement on its website. “At this time, our thoughts are with the families and loved ones of those affected by this tragedy. We recognize the profound loss this has caused, and we want to extend our sincerest condolences to everyone impacted.”

A phone line was set up to give updates and emotional support to people who had loved ones on board, Bering Air said. The company asked for privacy for everyone involved, and said it was committed to supporting authorities.

“Please know that we are doing everything we can to ensure that accurate information is shared promptly, and we will continue to update the public as needed,” the company said.

Unalakleet is a community of about 690 people about 150 miles (about 240 kilometers) southeast of Nome and 395 miles (about 640 kilometers) northwest of Anchorage. The village is on the Iditarod trail, route of the world’s most famous sled dog race, during which mushers and their teams must cross the frozen Norton Sound.

Nome, a Gold Rush town, is just south of the Arctic Circle and is known as the ending point of the 1,000-mile (1,610-kilometer) Iditarod. The city said prayer vigils would be held Friday for those on board the plane, friends and family and those involved in search efforts.

All 10 victims of the Alaska regional airline crash have been recovered, officials revealed on Saturday.

The Nome Volunteer Fire Department said in a Facebook post that “All ten individuals aboard the Bering Air plane have been officially brought home to Nome. Nome SAR efforts stand by for our Bering Air crew to complete their aircraft recovery operations.”

“We thank the Airforce for their main role in the recovery efforts for the sake of our community team,” they added.

All those aboard died in the crash, authorities previously confirmed.

The National Transportation Safety Board was sending nine people to the scene from various states.

Flying is an essential mode of transportation in Alaska due to the vastness of the landscape and limited infrastructure. Most communities are not connected to the developed road system that serves the state’s most populous region, and it’s common to travel by small plane.

Some high school teams fly to sporting events against rival high schools, and goods are brought to many communities by barge or by air.

The plane’s crash marks the third major U.S. aviation mishap in eight days. A commercial jetliner and an Army helicopter collided near the nation’s capital on Jan. 29, killing 67 people. A medical transportation plane crashed in Philadelphia on Jan. 31, killing the six people on board and another person on the ground.

Radar forensic data provided by the U.S. Civil Air Patrol indicated that about 3:18 p.m., the plane had “some kind of event which caused them to experience a rapid loss in elevation and a rapid loss in speed,” Coast Guard Lt. Cmdr. Benjamin McIntyre-Coble said. “What that event is, I can’t speculate to.”

McIntyre-Coble said he was unaware of any distress signals from the aircraft. Planes carry an emergency locating transmitter. If exposed to seawater, the device sends a signal to a satellite, which then relays that message back to the Coast Guard to indicate an aircraft may be in distress. No such messages were received by the Coast Guard, he said.

Rescuers were searching the aircraft’s last known location by helicopter when the wreckage was spotted, said Mike Salerno, a spokesperson for the U.S. Coast Guard. Two rescue swimmers were lowered to investigate.

Local, state and federal agencies had assisted in the search effort, combing stretches of ice-dotted waters and scouring miles of frozen tundra.

“It’s hard to accept the reality of our loss,” U.S. Sen. Lisa Murkowski said during an evening news conference.

Nome Mayor John Handeland choked up as he discussed the deaths and the response effort.

“Nome is a strong community, and in challenging times we come together and support each other. I expect the outpouring of support to continue in the coming days as we all work to recover from this tragic incident,” Handeland said.

The Cessna Caravan left Unalakleet at 2:37 p.m. Thursday, and officials lost contact with it less than an hour later, according to David Olson, director of operations for Bering Air. There was light snow and fog, with a temperature of 17 degrees Fahrenheit (minus 8.3 degrees Celsius), according to the National Weather Service.

The Coast Guard said the aircraft went missing about 30 miles (48 kilometers) southeast of Nome.

As the community tried to process the deadly event, crews worked swiftly on unstable, slushy sea ice to recover the bodies and the wreckage. The National Weather Service issued a winter weather advisory, with snow and winds up to 45 miles per hour (72 kilometers per hour) expected to hit the region Saturday night, lasting into Sunday evening.

Officials said a Black Hawk helicopter would be used to move the aircraft once the bodies were removed.

John Dougherty, a spokesperson with the Alaska State Troopers, said the Alaska National Guard was among the entities helping with body recovery efforts.

The Alaska National Guard said two helicopters, a cargo aircraft and a team of pararescuemen were assisting in the recovery efforts.

Authorities in western Alaska raced on Saturday to recover the remains of 10 people killed in a commuter plane crash from unstable sea ice before expected high winds and snow.

The aircraft is on an ice floe that is drifting about 5 miles (8 kilometers) a day, creating difficult conditions for recovery crews, said National Transportation Safety Board chair Jennifer Homendy during a press conference Saturday afternoon.

“Please know that we’ll work diligently to determine how this happened with the ultimate goal of improving safety in Alaska and across the United States,” said Homendy. The first priority is victim recovery, she said.

The Nome Volunteer Fire Department wrote on Facebook that they were using a window in the weather to try to “bring Bering passengers and crew home today” from one of the deadliest plane crashes in the state in 25 years.

The Bering Air single-engine turboprop plane was traveling from Unalakleet to the hub community of Nome when it disappeared Thursday afternoon. It was found the next day after an extensive search with all nine passengers and the pilot dead.