Police allege the only shooter was Mitchell Lapa, 48, a relative who was “an uninvited person in the house”.
Lapa, of Winnipeg, died of a gunshot wound, police said. A white pickup truck with Manitoba license plates registered in Lapa was found at the scene. It was towed on Friday.
Police said they were not looking for any other suspects and that there was no continuing threat to the safety of the community.
Passers-by placed flowers on the home’s lawn in memory of the family on Saturday. Local residents say the family was well loved in the community.
The identities of the four family members who lived at the house and were killed will be disclosed after an autopsy and once the next of kin are notified, police said.
Family, friends and neighbors told CBC News on Friday that the occupants of the house are Chris and Loretta Traynor and their four children: Sam, Brad, Adelaide and Joseph.
CBC News has learned that Chris Traynor and three of the children – Brad, Adelaide and Joseph – were killed as Loretta Traynor survived the shooting and their son Sam was not at home at the time of the incident.
Police said a 50-year-old woman survived with a gunshot wound to her leg and was taken to a local hospital for treatment. His injuries were considered serious but not fatal on Friday.
The shooter is believed to be Loretta Traynor’s brother, according to a 2019 online obituary for their father.
Watch | CBC’s Angelina King reports the latest events near the scene of the Oshawa murders:
Const. George Tudos, spokesperson for the Durham Regional Police Department, said on Friday that several callers said they heard gunshots inside the residence, located near the corner of Harmony Road and Parklane Avenue, at around 1:20 am in the morning.
Neighbors told CBC News they heard between 10 and 15 gunshots.
Tudos said police were awaiting confirmation of the victims’ ages from the coroner.
A memorial is also growing outside the Monsignor Paul Dwyer Catholic High School in Oshawa, where Chris Traynor was a teacher. The school is part of the Durham Catholic District School Board.
Traynor is listed as a staff member on the school’s website. He was also a baseball coach, according to Baseball Oshawa.
“He was a role model. A caring teacher, says a student
Matthew Reid, a former student, said Traynor was an amazing person and an amazing teacher.
Reid said Traynor taught him twice – in grade 11 and again in grade 12.
“He would always go the extra mile to make sure his students were successful,” Reid told CBC News.
“He had a great sense of humor and always made the class laugh. It was very easy to tell that Mr. Traynor loved his job. He loved to tell stories and jokes.
“I admired him. He was a model. A caring teacher, a loving father and a loving husband. Mr. Traynor was the perfect example of a man, ”added Reid.
Explaining that “these have been very difficult days,” Reid said that many people “feel the immense weight of this tragedy”.
Claire Dennis, friend of one of the children and former student of Chris Traynor, has started a GoFundMe campaign to support the family.
“They were an absolutely amazing family with the biggest hearts,” Dennis told CBC News.
And at the family house, a constant stream of people come to pay homage to him. It is so obvious that this family is so appreciated and respected in the community. Friends say they all have kind hearts and have made an impact on so many people. pic.twitter.com/hTHLlo6DQc
– @ angelinaaking