A now-former Newcastle police sergeant already facing felony charges for allegedly staking a nurse and chasing her with a gun faces more charges related to a yearlong pattern of violence that prosecutors say involved a police cruiser, an officer's baton, a department K-9 and, in one instance, an alleged knife threat outside a local lodge.
Nicholas Joseph Kaminski, 36, was arrested in May following allegations involving a nurse at Weston County Health Services.
Prosecutors last week filed amended misdemeanor and felony charges that combine allegations spanning from July 2025 through May 2026.
Kaminski is charged with two counts of aggravated assault and battery, one count of felonious restraint and three counts of domestic battery.
According to court records, Kaminski is scheduled be in Weston County Circuit Court on Tuesday to face the amended and new new charges.
If convicted on all six counts and ordered to serve consecutive sentences, he could face up to 27½ years in prison.
A request for comment from Newcastle Police Chief Derek Thompson was not returned before publication.
From The Start
An affidavit filed by Division of Criminal Investigation Special Agent Ed Rosier outlines three alleged physical confrontations involving Kaminski and a woman he began dating in early 2024.
Investigators were told Kaminski was allegedly verbally abusive throughout much of the relationship, frequently degrading the woman and calling her names.
Although she reportedly said Kaminski did not typically strike her, she described incidents that left bruises and marks, according to the affidavit.
The first alleged physical altercation happened in July 2025 after Kaminski became angry about another man staying at the woman's home, Rosier wrote. Because she did not want Kaminski around her children, she agreed to meet him at a local gun range instead.
Rosier wrote that witnesses told investigators Kaminski pulled the woman from her vehicle by her arms and threw her keys into a nearby field.
"Kaminski started throwing [her] against the car while screaming and yelling,” the affidavit says.
While shoving her into the vehicle, Kaminski allegedly struck her head, back and body against the car and used his police nightstick to intimidate her.
Investigators later documented bruising, according to the affidavit.
'Knifed'
A second alleged incident happened Dec. 10, 2025.
According to investigators, the woman drove to the Newcastle Lodge and Convention Center because it was public and well-lit after Kaminski demanded she meet with him.
The affidavit alleges Kaminski followed her in a police vehicle, took her keys, ordered her into his patrol car and physically pulled her from her SUV when she refused.
Rosier wrote that Kaminski then "started cutting his own arm and told her that he would do the same thing to her if she didn't get into his cop car."
The woman later told investigators she believed Kaminski would have "knifed her to death" had she refused to comply.
According to the affidavit, Kaminski then drove her toward the refinery area outside Newcastle, where he continued yelling at her.
The allegations led prosecutors to charge Kaminski with aggravated assault and battery and felonious restraint.
Hospital Confrontation
More recent allegations stem from incidents at Weston County Health Services, where the woman worked as a nurse.
On May 10, Kaminski reportedly arrived at the hospital while on duty after transporting an unresponsive patient, according to court documents.
Investigators allege he demanded to speak with the woman while she was treating a patient and confronted her about communicating with another woman.
Hospital surveillance video reviewed by DCI reportedly shows Kaminski, dressed in full police uniform, grabbing the woman's arm and wrist, pulling her down a hallway and backing her into a corner.
The affidavit also cites statements from a witness who reported that Kaminski entered a room, closed the door and stated, "I know there's no f***ing cameras in here."
The witness told investigators Kaminski then threw the woman into cabinets during the confrontation, the affidavit says.
The amended charges are separate from another May incident that originally led to Kaminski's arrest.
'Or I'm Coming In'
Kaminski was placed on leave May 22 following concerns involving the same nurse, according to a previously filed affidavit by Weston County Sheriff's Deputy Daniel Fields.
That evening, investigators say Kaminski began sending increasingly threatening text messages demanding that the woman come outside and speak with him.
Among the messages cited in court records were: "Hey ur f***ing ass outside. Or I'm coming in,"
"U have 3 minutes to either come out here or answer the phone,” and, "U made this worse by not coming outside."
Just before 4 a.m., the nurse was escorted to her vehicle by a law enforcement officer after finishing her shift.
According to the affidavit, Kaminski emerged from a nearby parking lot and approached her vehicle despite being told she did not want to speak with him.
Investigators say Kaminski cursed at the other officer and sprinted toward the vehicle as the nurse drove away.
In Custody
Newcastle Police Chief Derek Thompson later located Kaminski and conducted a traffic stop.
A search uncovered a loaded Glock 48 handgun with a round chambered, along with a folding knife and brass knuckles, according to the affidavit.
Kaminski was arrested and booked into the Weston County Detention Center, where he remained in custody as of Friday.
At his initial appearance on the earlier charges, Circuit Court Judge Matt Castano set a bond at $35,000 cash only and ordered Kaminski to have no contact with the alleged victim.
Court records also show he is prohibited from possessing firearms while the case is pending.
Kolby Fedore can be reached at kolby@cowboystatedaily.com.
