Police officers responding to an alarm at a Brooklyn home Friday found the front door and a kitchen window open — and $700,000 in cash and more than 10 pounds of marijuana inside, the NYPD said.

Officers arrested a woman in the Blake Avenue home after they answered the security alarm at 11:30 a.m., police said.

Police then executed a search warrant, recovering the cash, 10.4 pounds of marijuana, a scale, a loaded .38 handgun and two forged emergency parking placards from the New York City Sheriff’s Office and the Uniformed Firefighter’s Association, the NYPD said.

Chanisha William, 31, is charged with criminal possession of marijuana and criminal possession of a weapon, possession of a forged instrument, drug paraphernalia and violation of local law.

Arraignment information was not immediately available Saturday evening.

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