A New Jersey man allegedly beat his stepmother to death with a baseball bat Wednesday night and ran off into the darkness, according to prosecutors. 

John Daniels Jr. was arrested the next day.

Creskill Police responded to the family's home in an upscale gated community around 6:45 p.m. Wednesday and found 48-year-old Irma Daniels dead of blunt force trauma, authorities said.

When they arrived, her 30-year-old suspected killer was not in the house. By Thursday, police had him behind bars, the Bergen County Prosecutor's Office said.

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Irma Daniels John Daniels split

John Daniels Jr., of Cresskill, N.J., is accused of beating Irma Daniels to death with a baseball bat Wednesday evening in their home in an upscale gated community. (Facebook)

After prosecutors filed a motion for pretrial detention ahead of his initial appearance Friday, a judge ordered him held without bail until a hearing next week. 

Daniels, stuttering at times and his voice cracking at others, spoke only to answer the judge's questions, saying either "Yes, your honor," or, "No, your honor."

Daniels faces charges of first-degree murder, unlawful possession of a weapon and lying to investigators, among others.

John Daniels smiles with cigar in mouth next to another man

John Daniels Jr., right, smokes a cigar on vacation. Bergen County prosecutors say he beat his stepmom to death with a baseball bat at their home in Cresskill, N.J. (John Daniels/Facebook)

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A LinkedIn profile for the suspect says he is an investment banker who received a master's degree in business from Boston College and attended Seton Hall University. However, authorities said in a statement he is unemployed and single.

Police cars outside a suburban home

A police cruiser is parked outside a condo in Cresskill, N.J., Thursday, Aug. 17, 2023, where a woman was beaten to death with a baseball bat Wednesday night. (Kevin C. Downs for Fox News Digital)

The public portion of his Facebook profile consists mainly of selfies, many of them shirtless, and pictures from a trip to Italy in 2016.

John Daniels in a Facebook selfie, shirtless wearing sunglasses

John Daniels Jr., 30, is charged with murder after allegedly beating his stepmom Irma Daniels to death with a baseball bat inside their home. (John Daniels/Facebook)

Irma Daniels, a Realtor, was originally from Russia, according to her profile on the Sotheby's website.

She had a doctorate from the Finance Academy in Moscow and an MBA in marketing before traveling to the U.S., where she married John Daniels Sr., a lawyer.

Irma Daniels in close cropped portrait

Bergen County prosecutors say Irma Daniels, 48, died at the hands of her husband's son in a brutal attack with a baseball bat Wednesday evening. (Irma Daniels/Facebook)

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Just days before her death, she posted a video of the Caucasian Mountains to Facebook, writing that she was going back to her roots.

Police cars outside a suburban home

Police break down the crime scene outside a condo in Cresskill, N.J., Thursday, Aug. 17, 2023, where a woman was beaten to death with a baseball bat. (Kevin C. Downs for Fox News Digital)

"My beautiful motherland with breathtaking Caucasian Mountains, ancient culture, heartbreaking history and graceful and noble people," she wrote. "Proud of being #Circassian."

Daniels is due back in court Wednesday at 9 a.m.