Nearly 50 cars have been stolen or broken into across Blenheim in one month, South Island police say.
Sergeant Andrew Young urges the Blenheim public to take extra precautions to protect their cars from theft as numerous car owners in the district have been victims of crime.
From mid-March until early April, 47 cars have been either broken into or interfered with.
Young understood many of the stolen cars were used to commit further crimes in the region.