Maniac who beat aunt to death with broom was banned from her NYC building for sick behavior — but family is sticking by him

A troubled nephew accused of fatally beating his aunt with a broom was such a menace he’d been banned from her Queens building – but his family is standing by him.

Alexander Fleming was an unwelcome, drugged-up and mentally unhinged presence often seen pacing the block, at the 164th Street home where his aunt Juanita Dallas, 55, lived for a decade, residents told The Post.

He even defecated outside the home and punched Dallas’ landlord just weeks before Tuesday evening, when cops said he bickered with his aunt, flew into a rage and whacked her in the head with a broom inside her Jamaica basement apartment.

The blow killed Dallas, but her niece Dominique Mitchell said the family will still stick by Fleming and surround him with love.

“He is a 29 year-old kid who lost his dad before he was even born,” she said about Fleming, who is her cousin and god-brother. “His life has been messed up since then. It’s been a lot of bad and sadness the last couple of years for him.

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“He is one of my favorite human beings in the world. I have never given up on him. I’ve always tried to help him.”

Fleming faces a murder charge after cops arrested him Tuesday.

The fatal confrontation unfolded while Dallas’ mother and 15-year-old son were in the house, Mitchell said. The pair are staying together in the aftermath, she said.

“He’s doing a lot better than what we were expected,” Mitchell said of Dallas’ son. “He was her only child, her miracle baby. She had trouble having kids and then she finally had (him). They were close. We are going to surround him with love.”

For neighbors, the fight was the tragic culmination of long-standing problems.

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Fleming had several tense run-ins with landlord Jainarine Chandick, who said he didn’t want the “troublemaker” — who had racked up 10 prior arrests — on his property. He claimed he called the cops when Fleming punched him in the face during one early August fracas.

“He comes here, he urinates on my concrete,” Chandick said Thursday. “He s—s on my concrete. He smokes weed. I told him you can’t come here. He lifted his hand to hit me.”

Fleming’s prior arrests go back to 2018, when he was arrested for criminal mischief in Queens, law enforcement sources said. Since then, he regularly had trouble with the law, ranging from grand larceny to public lewdness to acting in a manner injurious to a child.

One recent incident doesn’t appear to have led to an arrest, but was nonetheless troubling to Chandick.

The landlord said a few weeks before the murder that Fleming had forced himself into the yard.

“I tried to stop him and he punched me in my face,” Chandick said, showing an NYPD incident report slip to The Post. “He broke the gate light, so it’s not working.”

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A longtime resident of the block said Fleming appeared to be homeless.

“That boy has lost his marbles,” he said, pointing to his head and twirling his fingers. “He needs help.

“You could see the transition over the last five years, I’d say,” he said, holding up five fingers. “He was spiraling downward, out of control.  He was looking dirty, he was pacing up and down the block.”

Neighbor Jose Lizo, 56, said he often saw a drugged-out Fleming hunched over, “rocking, looking like a zombie.”

He said when he once caught Fleming rummaging inside his car that the troubled derelict could barely stand up or keep his eyes open.

“When he comes to see his family, he knocks on the window and they open the door for him,” Lizo said.

“I feel sorry for the whole family.”

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