Tyrese Devon Haspil, the 21-year-old personal assistant of young Bangladeshi entrepreneur, Fahim Saleh who was found decapitated and dismembered in his US residence this week has been arrested.

According to The New York times, he is expected to be charged in the horrific killing of the 33-year-old Gokada CEO who was discovered dead on Tuesday afternoon by his sister inside his $2.25 million condo in a luxury building on the Lower East Side of New York.

She had gone to check in on him after not hearing from him for about a day but was met with a gruesome scene. Reports said his head and limbs had been removed, and parts of his body had been placed in large plastic bags. An electric saw was still plugged in nearby.

The personal assistant is expected to be charged in a criminal complaint with second-degree murder and other crimes.

However, it is believed that the killing motive is from Mr. Saleh’s having discovered that the assistant had stolen tens of thousands of dollars from him, despite the fact that Mr. Saleh had not reported the man and had set up what amounted to a repayment plan for him to return the money, authorities told NYT.

The police are expected to announce the arrest at a news conference on Friday. Investigators have also concluded that Mr. Saleh was killed on Monday, the day before his body was found, and that the killer used his employer’s credit card to pay for a car to a Home Depot to buy cleaning supplies to sanitize the crime scene.

A law enforcement officer reportedly said the killer returned to Mr. Saleh’s apartment the next day to dismember the body and clean up. Detectives believe that the killer, dressed in a black three-piece suit, wearing a black mask and carrying a duffel bag, followed Mr. Saleh off an elevator in his building and into his apartment.

He used a Taser to immobilize Mr. Saleh and then stabbed him to death. Security video taken from inside the elevator shows the killer later using a battery-operated portable vacuum cleaner in an apparent effort to remove any traces of his presence, the official said.

New York City’s medical examiner announced on Thursday that Mr. Saleh had died from multiple stab wounds to his neck and torso. Initially, a law enforcement official had described the killing as a “hit” and said it looked “like a professional job.”