The victim, who is believed to be 16 and was identified by his friends only as John, was fatally struck by a driver in a possible road-rage attack near the stadium Friday night, authorities said.
Investigators say they served a search warrant at a home in Los Angeles the following night. They seized two cars, including the Honda Accord they say was involved in the deadly incident.
Teen bicyclist struck, killed by fleeing driver in possible road-rage attack near BMO Stadium
Police haven't named the 28-year-old person of interest, but they're urging him to turn himself in.
It all started when about 40 bicyclists heading southbound on Figueroa Street became involved in an altercation with the driver of the sedan.
That driver allegedly followed the group into the parking lot near the stadium and then struck the victim. The driver fled and the teenage boy was pronounced dead at the scene.
Friends call for justice after hit-and-run outside BMO Stadium leaves teen dead
On Saturday, friends and family gathered for a memorial at the crash site to honor the victim. Some of John's friends are hopeful there's swift justice.
"It's really hard to be honest, we're just trying to ride and it's really hard for the family too," said Manuel Ramirez. "He didn't deserve to die in the streets like that."