CALABASAS, Calif. (AP) — Coroner’s officials worked to recover victims’ remains Monday from the hillside outside Los Angeles where a helicopter carrying Kobe Bryant, his daughter, Gianna, and seven others crashed in weather so foggy that local police departments had grounded their own choppers.

Among those killed in the crash were John Altobelli, 56, longtime head coach of Southern California’s Orange Coast College baseball team; his wife, Keri; and daughter, Alyssa, who played on the same basketball team as Bryant’s daughter, said Altobelli’s brother, Tony, sports information director at the school.

Costa Mesa Mayor Katrina Foley tweeted that the dead also included Christina Mauser, a girls basketball coach at a nearby elementary school. Her husband, Matt Mauser, said in a Facebook post: “My kids and I are devastated. We lost our beautiful wife and mom today in a helicopter crash.”

About 20 investigators were on the scene where everyone aboard was killed Sunday morning in the crash, which left debris scattered over an area the size of a football field.

The accident generated an outpouring of grief and shock around the world over the sudden loss of the all-time basketball great who spent his entire 20-year career with the Los Angeles Lakers.

Pilot lost in fog

The pilot, whose name has not been released, had asked for and received special clearance to fly in heavy fog just minutes before the crash. Several aviation experts said it is not uncommon for helicopter pilots to be given such permission, though some thought it unusual that it would be granted in airspace as busy as that over Los Angeles.

But Kurt Deetz, who flew for Bryant dozens of times in the same chopper that went down, said permission is often granted in the area.

“It happened all the time in the winter months in LA,” Deetz said. “You get fog.”

The helicopter left Santa Ana in Orange County, south of Los Angeles, shortly after 9 a.m., heading north and then west. Bryant was believed to be headed for his youth sports academy in nearby Thousand Oaks, which was holding a basketball tournament Sunday in which Bryant’s daughter, known as Gigi, was competing.

Should flying been allowed?

While investigators have yet to establish the cause of the wreck, the tragedy immediately raised questions of whether the pilot should have been allowed to fly in such weather. At the time, the Los Angeles Police Department and the county sheriff’s department had grounded their own helicopters. Air traffic controllers noted poor visibility around Burbank to the north and Van Nuys to the northwest. At one point, the controllers instructed the chopper to circle because of other planes in area before proceeding.

The aircraft crashed in Calabasas, about 30 miles (48 kilometers) northwest of downtown Los Angeles, around 9:45 a.m. at about 1,400 feet (426 meters), according to data from Flightradar24. When it struck the ground, it was flying at about 184 mph and descending at a rate of more than 4,000 feet per minute, the data showed.

Bryant had been known since his playing days for taking helicopters instead of braving the notoriously snarled Los Angeles traffic. “I’m not going into LA without the Mamba chopper,” he joked on “Jimmy Kimmel Live” in a 2018 interview, referring to his own nickname, Black Mamba.

Randy Waldman, a helicopter flight instructor who teaches at the nearby Van Nuys airport, said it’s likely the pilot got disoriented in the fog and the helicopter went into a fatal dive.

“It’s a common thing that happens in airplanes and helicopters with people flying with poor visibility,” Waldman said. “If you’re flying visually, if you get caught in a situation where you can’t see out the windshield, the life expectancy of the pilot and the aircraft is maybe 10, 15 seconds, and it happens all the time, and it’s really a shame.”

Waldman said it was the same thing that happened to John F. Kennedy Jr. when his plane dropped out of the sky near Martha’s Vineyard, Massachusetts, in 1999.

“A lot of times somebody who’s doing it for a living is pressured to get their client to where they have to go,” Waldman said. “They take chances that maybe they shouldn’t take.”

David Hoeppner, an expert on helicopter design, said he won’t fly on helicopters.

“Part of it is the way they certify and design these things,” said Hoeppner, a retired engineering professor at the University of Utah. “But the other part is helicopter pilots often fly in conditions where they shouldn’t be flying.”

Thousands of fans, many wearing Bryant jerseys and chanting his name, gathered outside the Staples Center in downtown Los Angeles, home of the Lakers and site of Sunday’s Grammy Awards, where Bryant was honored.

Recovering bodies

The Los Angeles County medical examiner, Dr. Jonathan Lucas, said the rugged terrain complicated efforts to recover the remains. He estimated it would take at least a couple of days to complete the task.

Three bodies were recovered Sunday afternoon before darkness forced the search to be suspended, the coroner’s office said.

KBOI-TV in Boise, Idaho, reported that a girls team that was to have played against his daughter’s squad returned home Sunday night after learning of the fatal crash during the tournament at Bryant’s Mamba Sports Academy.

“All of a sudden the games just stopped, the whole facility went silent,” George Rodriguez, coach of the Treasure Valley Hoop Dreams team, told the station. “We heard some girls screaming. Nobody really quite knew what was going on until the news started to break ground and the message got around of the tragic stuff that happened with Kobe.”

Federal safety investigators were sent to the scene. Among other things, they will look at the pilot’s history and the chopper’s maintenance records, said National Transportation Safety Board board member Jennifer Homendy.

Deetz said the crash was more likely caused by bad weather than by engine or other mechanical problems.

“The likelihood of a catastrophic twin engine failure on that aircraft — it just doesn’t happen,” he told the Los Angeles Times.

Justin Green, an aviation attorney in New York who flew helicopters in the Marine Corps, said pilots can become disoriented in low visibility, losing track of which direction is up. Green said a pilot flying an S-76 would be instrument-rated, meaning that person could fly the helicopter without relying on visual cues from outside.

Colin Storm was in his living room in Calabasas when he heard what sounded to him like a low-flying airplane or helicopter.

“It was very foggy so we couldn’t see anything,” he said. “But then we heard some sputtering and then a boom.”

The fog cleared a bit, and Storm could see smoke rising from the hillside in front of his home.

Firefighters hiked in with medical equipment and hoses, and medical personnel rappelled to the site from a helicopter but found no survivors, authorities said.

News of the charismatic superstar’s death rocketed around the sports and entertainment worlds, with many taking to Twitter to register their shock, disbelief and anguish.

“Words can’t describe the pain I am feeling. I loved Kobe — he was like a little brother to me,” retired NBA great Michael Jordan said. “We used to talk often, and I will miss those conversations very much. He was a fierce competitor, one of the greats of the game and a creative force.”

Bryant retired in 2016 as the third-leading scorer in NBA history, finishing two decades with the Lakers as a prolific shot-maker with a sublime all-around game and a relentless competitive drive. He held that spot in the league scoring ranks until Saturday night, when the Lakers’ LeBron James passed him for third place during a game in Philadelphia, Bryant’s hometown.

He was the league MVP in 2008 and a two-time NBA scoring champion. He teamed with Shaquille O’Neal in a combustible partnership to lead the Lakers to consecutive NBA titles in 2000, 2001 and 2002. He went on to win two more titles in 2009 and 2010.

His Lakers tenure was marred by scandal when in 2003, Bryant was accused of raping a 19-year-old employee at a Colorado resort. He said the two had consensual sex, and prosecutors later dropped the sexual assault charge at the request of the accuser. The woman filed a civil suit against Bryant that was settled out of court.

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Associated Press writers Christopher Weber and John Antczak in Los Angeles, David Koenig in Dallas, Tim Reynolds in Miami and Michael Rubinkam in northeastern Pennsylvania contributed to this report.