Robert Dorgan, who also identified as Roberta Esposito, killed himself after opening fire at the Pawtucket ice rink where his son was playing on Monday afternoon — less than a week after another transgender gunman shot up a school in one of Canada’s deadliest mass shootings.

The night before the bloodshed, the 56-year-old dad — who underwent gender reassignment surgery in 2020 — made an ominous post on X in anger at someone calling trans Democratic Rep. Sarah McBride a man.

“Keep bashing us. But do not wonder why we Go BERSERK,” Dorgan wrote in the chilling post.

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Police believe Dorgan, too, was targeting his own family when he wreaked havoc at the ice rink following years of heated court disputes over his identity.

The fatal victims of Monday’s shooting include the mother of Dorgan’s hockey player son and the student athlete’s sibling, multiple sources told WPRI.

It wasn’t immediately clear if the mom gunned down was Dorgan’s ex-wife.

His ex filed for divorce in 2020 on the grounds of “gender reassignment surgery, narcissistic + personality disorder traits,” according to the court filing obtained by the local outlet.

Their split was finalised in 2021.

Robert Dorgan opened fire at a high school hockey game in Rhode Island on Monday, Feb. 16, 2026.

The three people who were injured in Monday’s shooting included two other relatives and a family friend. They remained in a critical condition, cops said.

A woman spotted leaving the Pawtucket police station in the wake of the shooting identified herself as the gunman’s daughter, telling reporters he “has mental health issues” and was “very sick.”

“He shot my family, and he’s dead now,” she said.

Police haven’t released any details about the victims and said they are still probing an exact motive.

“It appears that this was a targeted event, that it may be a family dispute,” Pawtucket Police Chief Tina Goncalves said.

Detectives were reviewing chilling surveillance from inside the area that showed players diving for cover and fans fleeing their seats after the gunfire broke out – as they piece together what happened.

The police chief hailed a Good Samaritan who apparently jumped in to try to subdue the shooter.

Witnesses said the man — the father of another hockey player — managed to disarm Dorgan, but he had a backup firearm.

The ice rink slaughter came just days after 18-year-old transgender high school dropout, Jesse Van Rootselaar, murdered his mom own and stepbrother before gunning down six others at his former school in Canada.

Originally published as Rhode Island ice hockey shooter Robert Dorgan threatened to go ‘BERSERK’ in trans-rights rant day before mass shooting