Two young men who shone a high-powered laser at the police helicopter, filling the cockpit with bright green light, have been found guilty.
Joshua O'Hare-Knight, 21, and James Spiers, 19, were found guilty in Auckland District Court on Friday of causing unnecessary danger to an aircraft.
The offence, under the Civil Aviation Act, carries a maximum sentence of 12 months in prison.
The jury returned late on Friday after hearing four days of evidence, including the crew of the police Eagle helicopter.
Crown prosecutor Asishna Prasad said in her opening address to the jurors that the pair had taken turns pointing the laser at the police Eagle helicopter about 11pm on May 7 last year while they were at an 18th birthday party in Auckland's Mt Albert.