No charges have been filed.
Police say Bryant apparently thought the man was taking his picture with a cell phone at a Carmel Valley church on Sunday. Bryant reportedly took the phone from the man but saw no pictures on it, then left the church.
The man said he had to go to a hospital for treatment after his wrist was injured in the incident.
"Something occurred," a San Diego police department spokesman told ESPN, "and (Bryant) was involved. The investigation is ongoing. We're following up on the allegations and trying to sort it out."
Police spokesman Detective Gary Hassen told The Associated Press on Tuesday that detectives were told they won't be able to talk to the alleged victim until Aug. 24.
In a statement to the Los Angeles Times, Bryant attorney Mark Campbell said Bryant "is aware of the baseless allegations asserted against him and is prepared to defend against them fully."
Information from The Associated Press was used in this report.