The police investigation into allegations that NASCAR driver Kurt Busch assaulted his ex-girlfriend has been finished and forwarded to Delaware state prosecutors to decide whether charges will be filed.

Cpl. Mark Hoffman with the Dover Police Department said Tuesday that the agency's investigation into the allegations was finished but declined to say whether investigators were recommending that Busch be charged. He declined to release the report.

Hoffman says the Delaware Attorney General's Office will decide whether to charge Busch. A spokesman for the office didn't immediately respond to a request about timing.

Busch's ex-girlfriend, Patricia Driscol, claims Busch choked her and smashed her head into a wall inside his motorhome at Dover International Speedway in September.

Attorneys for the 36-year-old Busch have denied the allegations.