Odom, who stars in a reality TV show with his wife, Khloe Kardashian, was visiting his native Queens on Thursday afternoon when a motorcycle tried to turn left in front of the chauffeured Cadillac Escalade sport-utility-vehicle he was riding in, police said.
The motorcycle hit the front bumper of the SUV and went out of control, striking a pedestrian, 15-year-old Awsaf Alvi Islam, New York City Police Spokesman Paul Browne said Tuesday.
"It hit him from behind and he went right down headfirst," said Rahat Islam, a friend of the boy.
An ambulance took the boy to Elmhurst Hospital Center in Queens with severe head trauma, said Atiya Butler, a spokeswoman for the hospital. He died of his injuries at about 2:30 p.m. on Friday.
The driver of the motorcycle, 32-year-old Christian Mora of Queens, was in stable condition at the same hospital, Browne said. No one has been arrested, but the collision remains under investigation, he said.
Odom was not at the scene of the accident when officers responded and was not mentioned in the police report, a source not authorized to speak publicly on the matter told ESPNLosAngeles.com's Dave McMenamin.
A source close to Odom told the New York Post that he was not physically injured in the accident, but was "shaken up" by the incident.
The SUV was owned by Attitude New York. The driver was unhurt.
A spokesman for the transportation service involved in the accident told ESPNLosAngeles.com: "We are deeply saddened by the family's loss. Our thoughts and prayers are with them. We are cooperating with the investigation and can not say anything further at this point."
Awsaf Alvi Islam was the son of immigrants from Bangladesh, an avid soccer player who had recently become more involved in his local mosque, Rahat Islam said.
"He was very quiet, a good boy," said Nomani Choudhury, president of the Jam-e-Masjid mosque.
Mourners gathered on the sidewalk in front of the mosque on Monday and bowed their heads in prayer around Islam's plain wooden casket. The consul-general of Bangladesh in New York, Shabbir Ahmad Chowdhury, also attended the service, Choudhury said.
Members of the mosque took up a collection to pay for the casket and burial at Washington Memorial Park on Long Island.
"His family is hand-to-mouth, so we took it on ourselves," Choudhury said.
The collision occurred shortly after Odom had stopped at the China One Taco House at the corner of 45th Street and 48th Avenue in the Woodside neighborhood of Queens, said Shadrath Choudhury, 12, who lives in the area. He and other children from the neighborhood flocked around Odom's vehicle and took pictures with their cell phones as Odom waved from the rear seat.
Shahrath Choudhury said two motorcycles had been speeding up and down the avenue that afternoon, one of them doing wheelies.
"My thoughts and prayers are with the young boy's family," Odom wrote Monday via the Twitter messaging service.
A spokesman for the Lakers, John Black, said the team would not comment about players during the NBA lockout. A spokeswoman for Kardashian also declined comment.
Kardashian was with the Lakers player in New York, but her publicist confirmed that she was not in the car at the time of the accident. She is a socialite who has appeared in three reality TV series with her sisters, Kim and Kourtney. She and Odom were married in 2009 and have a spinoff reality TV show, Khloe & Lamar, on the E! cable network.
Information from ESPNLosAngeles.com's Dave McMenamin and Ramona Shelburne and from The Associated Press was used in this report.