The death toll in the Nova Scotia massacre continues to rise — with the number now at least 23, including the gunman, authorities said Tuesday.

The dead included a 17-year-old victim, the Royal Canadian Mounted Police said in a statement on Facebook.

“All other victims are adults, both men and women. Some of the victims were known to [killer] Gabriel Wortman and were targeted, while others were not known to the suspect.”

Those murdered in the weekend slaughter included 54-year-old cancer survivor Gina Goulet — a denture-maker just like the gunman, Wortman, 51. It was not clear whether the pair knew each other.

Cops have said Wortman embarked on his killing spree with “an initial motivation” Saturday night but that the nearly 14 hours of bloodshed then “turned into randomness,” with him knocking on doors in the rural Canadian town of Portapique, where he lived part-time, and pulling over drivers while dressed as a cop to execute people.

Authorities said that the initial number of dead would likely rise, given that the gunman left five homes and vehicles burning in his wake and their smoldering remains had to be sifted through.

There were several couples murdered, as well as a 17-year-old girl and her parents. A female Royal Canadian Mounted Police officer also was killed in the line of duty.

The dead were honored by Queen Elizabeth, the country’s titular head of state, in a statement on Twitter on Tuesday.

“Prince Philip and I have been deeply saddened by the appalling events in Nova Scotia, and we send our condolences to the families, friends and colleagues of those who have lost their lives,” the queen wrote on behalf of her and her husband.

A Halifax pilot also commemorated the dead — by drawing a heart in the sky.

Local air-traffic controllers caught the flight path of the touching tribute Sunday, Canada’s National Post said.  

“It was a terrible tragedy,” pilot Dimitri Neonates told the paper of the massacre. “I wanted in my own way to do something for the country.