Philip Polkinghorne's defence team says the Crown's accusations against him have been an insult

The Auckland eye surgeon's accused of killing his wife, Pauline Hanna, in 2021.

In his closing remarks Ron Mansfield KC says a lack of injuries on Hanna's body must mean she took her own life.

Herald reporter George Block says Mansfield also gave an explanation for Polkinghorne deleting his messages with sex worker Madison Ashton.

He says Mansfield claimed Polkinghorne just wanted his extra marital affairs kept private.

Ron Mansfield will continue his remarks in the morning before the judge sums up the case, then the jury's expected to start deliberating tomorrow afternoon.