According to People magazine, Diaz and her boyfriend, singer Justin Timberlake, were pursued by a photographer who was chasing them by car. Police have confirmed that they have opened an investigation.
The incident took place on Tuesday evening. The celebrity couple were leaving the home of a friend when a photographer jumped from the bushes.
According to early reports, the man was intent on snapping a photo of the two. The man then followed in his car in hot pursuit.
Police explained that there has not been an arrest in the case pending further investigation.