"In 1994, it was anything that would float," Officer Murphy said.

Officer Murphy, like more than 90 percent of all officers on the force, has not been involved in any shootings.

The couple were arrested by the authorities from the county prosecutor's office, Officer Murphy said.

Officer Murphy has repeatedly refused to talk to investigators, officials said.

Officer Murphy and his wife, Kathy, sat in the office holding hands, but they declined to comment.

Officer Murphy has refused so far to say anything to investigators.

Officer Murphy answers phones in a department electronics shop.

All but Officer Murphy have been involved in previous shootings.

Officer Murphy is not believed to be a subject of the investigation.

The chief added that in almost 40 years on the force he had seen nothing like Officer Murphy's action.