‘Him and his sister didn’t deserve this:’ Police say man killed girlfriend’s kids over smoking argument

WATERTOWN, Conn. — An argument between a Connecticut teenager and her mother’s boyfriend over his smoking in the house turned deadly after the man shot the 15-year-old and her 16-year-old brother on Tuesday night, Dec. 3, and then killed himself, according to the Watertown Police Department.

Della Jette and Sterling Jette Jr. were transported to Waterbury Hospital where they both were pronounced dead shortly after arrival, according to a news release from the Watertown Police Department. Their mother, identified by CNN affiliate WTNH as Danielle Jette, was on the scene when the shootings occurred and called 911, police said. She was not injured.

Paul Ferguson, 42, was pronounced dead at the scene from an apparent self-inflicted gunshot wound to the head, police said in the news release.

He had moved into the home two weeks before the incident, police said.

The argument began after Della Jette grew upset by Ferguson smoking in the house, Watertown Police detective and spokesman Mark Conway told CNN. Ferguson then retrieved a handgun from his bedroom and shot Sterling Jette — who had attempted to intervene — in the leg, Watertown Chief of Police John C. Gavallas said in a news conference covered by WTNH.

“The mother went downstairs to call 911 when she heard a second gunshot, presumably when he shot the daughter on the deck,” Gavallas said. “He came back in the house and shot the son in the chest.”

Watertown police were called to the home at around 9:47 p.m. and arrived to find the teenagers suffering from life-threatening injuries. They were transported to an area hospital where they both died, police said.

The teenagers’ deaths were ruled homicides by the Connecticut Office of the Chief Medical Examiner on Wednesday.

Ferguson was a convicted felon and not authorized to possess a firearm, according to police. He was convicted of first-degree unlawful restraint after an arrest on a sexual assault charge in 2007, Conway said.

Officers found several guns in the house, according to CNN affiliate WFSB.

Both teenagers were students at Kaynor Technical High School, according to police.

Jeffrey Wihbey, the superintendent of Connecticut Technical Schools, said there is nothing worse that can happen to a school community, according to a statement obtained by CNN affiliate WTNH.

“Our number one priority right now is doing all we can to support our students, staff, and families through this crisis,” Wihbey said in the statement. “Prior to the start of the school day, Kaynor Tech assembled the school’s crisis team. The team will provide grief counseling to students and anyone in the school community who may need it over the coming days.”

Watertown detectives, the Connecticut State Police and the Waterbury States Attorney’s Office were investigating the incident. Police said Jette was cooperating with investigators.

This was not the first tragedy to occur at the Connecticut home, police said.

Police responded to the home three years ago when Danielle Jette’s husband and Della and Sterling’s father, Sterling Jette Sr., fatally shot himself after a minor domestic dispute, Conway said.

“This mother is completely distraught as you can imagine,” Gavallas said during a press conference. “Boyfriend moves in the house two weeks ago for the holiday season. He’s gone and both her children are gone.”

Friends and peers remembered the brother and sister with a memorial set up outside a landscaping business where Sterling Jette worked, Evergreen Lawn and Landscape.

Friends said they can’t wrap their heads around why this happened.

“Him and his sister didn’t deserve this,” said Garrett Kowalski, a friend. He added he’ll miss Sterling’s presence and how he could make anyone laugh.

“She’s a really sweet girl. Once you meet her, you would love her because she’s so sweet, and is really caring,” said Alivia Brophy, a friend of Della’s.

Sterling and Kowalski worked together at the landscaping business since March. Kowalski said he had just seen Sterling Tuesday night. They had both been out shoveling.

“We were just hanging out like we usually do. If we weren’t hanging out we were working together. We were like two peas in a pod. We were always together,” Kowalski said.

“Garrett and him had a vehicle and they were going around in charge of all the apartments and condos and spent the last 36 hours together,” said Collin Sieracki, of Evergreen Lawn and Landscape.

Sterling got his license over the summer and loved to work. He would split wood at the shop for hours.

Sterling and his sister played soccer. Della also played basketball.

Kaynor Tech officials released a statement on Wednesday morning.

“Our hearts go out to the students’ family and friends during this difficult time,” said Kerry Markey, director of communications, Connecticut Technical Education and Career System. “There is nothing worse that can happen to a school community. Our number one priority right now is doing all we can to support our students, staff, and families through this crisis. Prior to the start of the school day, Kaynor Tech assembled the school’s crisis team. The team will provide grief counseling to students and anyone in the school community who may need it over the coming days.”

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