New details emerged Thursday in the grisly slaying of a Queen’s father — including that his son allegedly stomped on his head and choked him before stabbing him in the neck with a pair of scissors, officials said.

Jaimie Walker, 30, pleaded not guilty Thursday at his arraignment in Queens Supreme Court to charges of second-degree murder, possession of a weapon and criminal mischief. He’s accused of the brutal murder of Loandous Walker, 72, on Jan. 14 inside the family’s Queens Village home.

“This is a horrific crime,” DA Melinda Katz said in a statement. “The defendant repeatedly plunged the shears of a pair of scissors into his own father’s neck. The elderly man bled to death on the bathroom floor.”

Police were summoned to the Hempstead Avenue residence at about 6:30 a.m. where, in addition to the gruesome murder scene, they found the defendant’s 70-year-old mother, her daughter-in-law and her other son unconscious on a mattress in the living room.

Bottles containing an unknown substance were found nearby, and police suspect that the trio were poisoned.

While at the 109th Police Precinct following his arrest, Walker allegedly smashed a table inside an interview room and used the detached leg to shatter a two-way glass mirror, officials said.

If convicted, Walker faces up to life in prison.