Wainuiomata: Man gets 7-1/2 years for attack

A jealous lover was today jailed for a claw hammer attack on a man who he believed to be his ex-girlfriend’s new partner.

Trevor William Grindrod, 34, was sentenced at the High Court in Wellington to seven years and nine months imprisonment.

Justice Warwick Gendall said that six weeks after Grindrod split with his girlfriend, he visited her house uninvited and saw her with a workmate, “you thought, in a mildly amorous situation”.

The man barricaded himself in the bedroom and told Grindrod he had called the police, “but you were not to be denied,” attacking him with the claw hammer, Justice Gendall said.

“This was an unprovoked, prolonged, gratuitous attack with a lethal weapon,” Justice Gendall said.

“You were fortunate you did not kill the complainant.”

Crown prosecutor Kate Feltham said Grindrod walked from Wainuiomata to the workmate’s Lower Hutt house, “picking up” the hammer on the way.

He smashed his way into the property through a window, broke through the bedroom door and began hitting the man in the head and body with the hammer, adding punches and kicks.

The attack spilled into the bathroom where Grindrod ripped a vanity from the wall and attempted to beat his victim with it.

Grindrod told police he was trying to kill the man and was initially charged with attempted murder.

This was later reduced to injuring with intent to cause grievous bodily harm.

His victim suffered numerous injuries including a broken nose, but after months of physiotherapy escaped long term physical damage.

Justice Gendall noted Grindrod had 20 previous convictions, four of which were for assault and included two attacks on children between late 2007 and early 2008.


At first I had put Mr Grindrods attack as a crime passionnel (or crime of passion) but no sympathy here, previous attacks on children. Mr Grindrod was lucky not to have received the maximum sentence, and it seems his violent past has caught up with him in receipt of this sentencing.

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