Redmond police officers responding to a report of a domestic violence Sunday night discovered a medical marijuana grow operation — one that they believe is larger than the legal limit, according to police spokesman Jim Bove.

Shortly before 7 p.m., officers responded to domestic dispute at a home in the 14000 block of Northeast 85th Circle and found “several potted plants” and “growing equipment,” Bove said.

The unmarried couple who lives in the home said the operation was for medicinal purposes and provided documents that they had authorization to possess marijuana for medical purposes.

“By law, a person with this authorization is allowed to possess no more than 24 ounces of processed marijuana and no more than 15 marijuana plants per person,” Bove said.

The woman who lives there also claimed to be a medical marijuana provider for two other patients, but could only produce paperwork for one, putting the legal limit at 45 plants for this operation — 60 if she had paperwork for the second patient, Bove said.

Officers found 60 plants and confiscated 15 of them — the ones that were over the legal limit.

The man who lives at the home was arrested for second-degree assault and there were no arrests made for the grow operation, Bove said.

The case has been forwarded to the King County Prosecutor’s Office for review

“The law is pretty hazy and the officers who responded are following up on it,” Bove said.