Published: 2020-01-27 02:10:12 BdST
Among the dead was Bryant's 13-year-old daughter, Gianna, US media reported.
The chopper went down in a remote field around 10am (1800 GMT) about 40 miles (65 km) northwest of central Los Angeles, the city of Calabasas said on Twitter.
There were no survivors.
LA county firefighters on the scene of a helicopter crash that reportedly killed Kobe Bryant in Calabasas, California, US, January 26, 2020. Reuters
"This is a moment that leaves us struggling to find words that express the magnitude of shock and sorrow we are all feeling right now, and I am keeping Kobe's entire family in my prayers at this time of unimaginable grief," Los Angeles Mayor Eric Garcetti said in a statement.
Bryant's death sent shockwaves through the NBA.
In San Antonio, the Toronto Raptors and San Antonio Spurs paid their respects by allowing the 24-second clock to expire on each of their first possessions. Bryant wore No. 24 for much of his career.
"There's no words to express the pain Im going through with this tragedy of loosing my neice Gigi & my brother @kobebryant I love u and u will be missed," tweeted Bryant's former Lakers teammate Shaquille O'Neal. "My condolences goes out to the Bryant family and the families of the other passengers on board. IM SICK RIGHT NOW."
"Most people will remember Kobe as the magnificent athlete who inspired a whole generation of basketball players. But I will always remember him as a man who was much more than an athlete," Kareem Abdul-Jabbar, the all-time NBA scoring leader, said on Twitter.
File Photo: Los Angeles Lakers forward Kobe Bryant (24) heads to the basket past the defense of the Philadelphia 76ers forward Andre Iguodala (9) during the fourth quarter of their NBA basketball action in Philadelphia, Pennsylvania December 21, 2007. Reuters
First responders put out the flames at the crash site, the Los Angeles County Sheriff's department said, posting a picture of a fire truck and smoke emerging from the brush in a ravine.
Bryant had been known to use a helicopter for travel since his days as a player for the Lakers, when he commuted to games in a Sikorsky S-76 chopper, the celebrity news website TMZ said.
The Federal Aviation Administration identified the crashed helicopter as a Sikorsky S-76, saying in a statement that the FAA and the National Transportation Safety Board would investigate.
Kobe Bryant waves to the crowd near the end of a 120-111 loss to the Cleveland Cavaliers at Quicken Loans Arena. David Richard-USA TODAY Sports via Reuters
Bryant played all 20 of his National Basketball Association seasons with the Lakers, winning five championships and being named an all-star 18 times.
He was the third-leading scorer in league history with 33,643 points, until LeBron James passed him on Saturday. In his final tweet, Bryant saluted James' achievement, writing: "Continuing to move the game forward @KingJames. Much respect my brother."
Nicknamed "The Black Mamba," he became eligible to enter the Hall of Fame this year and is certain to be selected when the 2020 class is enshrined.
FILE PHOTO: Los Angeles Lakers Kobe Bryant carries his daughter Gianna, as his wife Vanessa and daughter Natalia (2nd R) stand next to him during the NBA Championship parade in Los Angeles, California, June 21, 2010. Reuters
Bryant's star power translated into the entertainment world as he mingled with show-business stars in Los Angeles.
In 2018, he won an Oscar for his animated short film "Dear Basketball."
But he was also accused of sexual assault in 2003 by an employee at a Colorado hotel, tarnishing his reputation and leading to a media storm to cover his trial.
Bryant denied the allegations and charges eventually were dropped after the woman refused to testify.
Bryant and his wife filed for divorce in 2011 after 10 years of marriage, but the couple said in 2013 they had reconciled.
FILE PHOTO: US President Barack Obama shares a laugh with Kobe Bryant during a ceremony honoring the 2009 NBA basketball champions Los Angeles Lakers in the East Room at the White House in Washington, January 25, 2010. Reuters
The Philadelphia native went straight from high school to the NBA, skipping the college ranks. Since he was still only 17 years old, his parents needed to co-sign his first contract with the Lakers and he played his first game with the team shortly after turning 18 in 1996.
He also won two Olympic gold medals, part of the US team in 2008 and 2012.
He retired after the 2015-2016 NBA season because of mounting injuries. In recent years, he had focused his attention on philanthropy and business ventures.