CANANDAIGUA, N.Y. (AP) — A grand jury will decide whether NASCAR driver Tony Stewart will be charged in the August death of a fellow driver at a sprint car race in upstate New York.

Ontario County District Attorney Michael Tantillo said Tuesday that after reviewing evidence collected by sheriff's investigators, he has decided to present the case to a grand jury. Tantillo could have determined there was not enough evidence to support charges and dropped the case.

Stewart's car struck and killed Kevin Ward Jr. at a dirt-track race in Canandaigua on Aug. 9. The 20-year-old had climbed from his car after it had spun while racing alongside Stewart.

Stewart issued a statement saying he looks forward to the process being completed and will continue to cooperate.

Here's the full statement from Ontario County District Attorney Michael Tantillo:

Over the past several weeks I have reviewed with members of the Ontario County Sheriff’s Department their investigation, as it progressed, in the Tony Stewart matter. Recently that office concluded its work and forwarded the complete case file to me. Upon my review of all of the information contained in the entire investigation, I have made the determination that it would be appropriate to submit the evidence to a grand jury, for their determination as to what action should be taken in this matter. Accordingly, the evidence developed in the investigation will be presented to an Ontario County grand jury in the near future.

As grand jury proceedings in New York State are strictly confidential by law, I am unable to state when the matter will be scheduled, other than to state that I intend to present the matter in the near future. Similarly, because of the confidential nature of these proceedings, I cannot state who will be called as witnesses, or what any witness’s expected testimony will be. When the presentation has been completed and a determination has been made, I will advise the public and the media at that time of the results.