SOUTH BEND, Ind. (AP) — The special prosecutor investigating a South Bend police officer’s fatal shooting of a car break-in suspect says he won’t be rushed and the probe will take “as long as it takes.”

A St. Joseph County judge named Ripley County Prosecutor Richard Hertel last week to oversee the investigation into South Bend Sgt. Ryan O’Neill’s June 16 shooting of Eric Logan.

Hertel said Tuesday that Indiana State Police investigators are assisting him and that he wants his probe to be “expeditious” but “complete.” He says it will last “as long as it takes.”

Hertel says that once his investigation is complete, his three options are to present his findings to a judge, convene a grand jury or file criminal charges.