Being a realist, the detective could not accept the statement of the accused that UFOs had caused the disturbance.

Since he was a realist, the detective could not accept the statement of the accused that UFOs had caused the disturbance.

Being a realist the detective could not accept the statement of the accused that UFOs had caused the disturbance.

Being that he was a realist, the detective could not accept the statement of the accused that UFOs had caused the disturbance.

Realist that he was, the detective could not accept the statement of the accused that UFOs had caused the disturbance.