Here is a piece of text: A driver was killed when his truck was involved in a crash with an SUV in Riverhead over the New Year’s holiday weekend.
Riverhead Town Police said Jason Damianos was driving a Ford pickup truck when he was involved in a collision with a Jeep Cherokee at the corner of Harrison Avenue and Old Country Road shortly before 6 a.m. Friday.
The victim was pronounced dead at Peconic Bay Medical Center. The SUV driver was treated for her injuries.
Riverhead Town Police Detectives are continuing the investigation and ask anyone with information on the cause of the crash to call them at 631-727-4500 ext. 328.

Based on the text material above, generate the response to the following quesion or instruction: What is being done to investigate the circumstances surrounding the accident?
This prompt doesn't seem malicious.