MONROVIA — A report of a water leak led to the discovery of more than 250 pot plants growing in an apartment earlier this week, police said Friday.

A property owner went to an apartment in the 700 block of West Walnut Avenue about 6:20 p.m. Wednesday after a neighbor reported a water leak, Monrovia police Sgt. Don Newton said.

No one was home in the leaking apartment, so the property owner went in, police said.

“He went inside and found all of the rooms full of marijuana plants,” police said in a written statement. “The water leak was caused by the irrigation system for the plants.”

The wiring used to provide electricity, which was allegedly stolen from the Southern California Edison grid, posed a serious safety risk, and SCE officials were summoned to cut off power to the unit, Newton said.

More than 250 marijuana plants were seized, along with hydroponic equipment used to grow the pot, officials said.

No suspects had been arrested Friday.