Corrupt ex-state Sen. Carl Kruger’s lover’s mom fought yesterday to stop city officials from entering a city-owned building in Brooklyn, The Post has learned.

Community Board 18 District Manager Dorothy Turano called 911 and claimed the officials were trespassing when they entered the government facility on Bergen Avenue that houses the board.

“They refused to let us in our own building!” an exasperated city official said.

City officials looking to claim office space for Sandy recovery efforts gained entry after bringing in a locksmith.

Turano, whose son Michael was convicted with Kruger in a bribery scheme, declined to comment.