Emergency 911 calls from Kobe Bryant crash released

Recently released emergency 911 phone calls about the helicopter crash that killed Kobe Bryant showed witnesses were concerned about the poor visibility due to fog and revive the tragic moment that rocked the basketball and entertainment worlds nine days ago.

The twin-engine Sikorsky S-76B slammed into a hillside and killed all nine people on board in an accident that still has many of the basketball great's fans grieving, with more public memorials to come.

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"It went over my head. It's thick in clouds. And then I heard a pop and it immediately stopped," one of the witnesses called into the 911 emergency services lines, according to audio released by the Los Angeles County Fire Department on Monday.

Emergency 911 audio has been released in the wake of the Kobe Bryant helicopter tragedy. Pic: Getty

"If this guy doesn't have night vision, I mean, he was, he's completely IFR," the caller said, referring to instrument flight rules.

The pilot, Ara Zobayan, was certified to fly by IFR as a flight instructor with more than 8,200 hours of flight time, officials said.

Zobayan had tried to climb out of a cloud layer when the aircraft banked sharply and dropped toward the ground with a speed of more than 2,000 feet (610 meters) per minute at impact, the National Transportation Safety Board said.

Audio recordings of air traffic control revealed the pilot requested flight following, a type of constant monitoring, due to concerns about visibility, but controllers said he was flying too low to be tracked.

The 911 recordings showed witnesses also had visibility on their minds.

‘We just heard a 'boom' and a dead sound

"I'm walking in the trail, I could hear the plane, I think it was in the clouds but couldn't see it. Then we just heard a 'boom' and a dead sound and then I could see the flames," one caller said.

Another summed up events more succinctly.

"A helicopter crashed into a mountain. We heard it, and now I'm looking at the flames," the witness said.

Bryant won five championships in his 20 seasons with the Los Angeles Lakers, retiring as the third leading scorer in the history of the National Basketball Association. He also won an Oscar for his short animated film "Dear Basketball."

Bryant's 13-year-old daughter Gianna, one of her teammates, another young friend, three of their parents and coach also died on their way to a girls' basketball game.

The remains of all the victims were released to their families on Monday, the Los Angeles County coroner's office said.

Memorial at Staples Centre taken down

A massive memorial created by the public outside Staples Centre in LA was being dismantled on Monday (local time), with an official saying some of the items would go to Bryant's widow and other family members.

The cleanup of flowers, balloons, jerseys, stuffed toys and basketballs began at 4am, with a fence erected around the site to keep the cleanup out of public view.

Fans spontaneously began creating the memorial in a plaza outside the arena as word of the tragedy truckled through. The memorial kept growing for a week, with personal messages written on many of the items.

By mid-morning Monday more than 1350 basketballs had been boxed up.

Bryant's widow Vanessa had requested items, which were to be cataloged and shipped to the family. Flowers will be composted and spread around plants near Staples Centre.

Fans were urged to donate to a Bryant foundation rather than bring more gifts and flowers.

With agencies