A 13-year-old boy has been identified as one of the 17 people injured when sadistic transgender shooter Robin Westman opened fire inside Annunciation Catholic Church in Minneapolis Wednesday morning.

Endre Gunter was shot in the stomach when Westman unleashed a barrage of bullets through the church’s stained-glass windows while kids were praying during a celebratory back-to-school Mass around 8:30 a.m., his mother said in a statement to CNN.

“Our son was shot at school today, inside a church praying with his classmates,” Danielle Gunter told the outlet.

She added that the young teen underwent surgery and is now recovering.

The shaken parent went on to thank a heroic Minneapolis police officer who rushed to their wounded eighth-grade son’s side, rendered aid and then prayed with the boy after he was struck.

“He said the officer rendered aid, hugged him, reassured him, and prayed with him before getting into the ambulance,” Endre’s mother said in the statement.

The family is now focused on helping the traumatized boy “rebuild his life, his trust, and his confidence.”

“We pray that everyone touched by this tragedy can find the strength to begin rebuilding too,” she said.

Two children, ages 8 and 10, were killed in the bloodshed.

The horror left 17 injured, including 14 children between the ages of 6 and 15, and three elderly parishioners in their 80s, Minneapolis Police Chief Brian O’Hara said.

The victims, who sustained a range of injuries in the gunfire, are all expected to survive.

Their identities have not yet been made public. 

Danielle Gunter did not immediately respond to The Post’s request for comment. 

The 23-year-old gunman — a transgender woman who changed his name from Robert five years ago — was found dead in the back of the church with a self-inflicted gunshot wound following the vicious shooting spree.

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He was armed with a rifle, a shotgun and pistol — and scrawled “kill Donald Trump” and “for the children” on his gun magazines.

Police are now investigating an apparent manifesto linked to the killer, who posted a series of twisted videos on YouTube just hours before the cowardly massacre, O’Hara confirmed at a press conference. 

In one 20-minute video, the menacing shooter flips through the disturbing handwritten manifesto, much of it written in a homespun code that used Cyrcill characters and English phonetic words that The Post translated.

In the deranged writings, he gleefully fantasizes about “being that scary horrible monster standing over those powerless kids” and reverently confesses admiration for the 2012 Sandy Hook massacre.

His mother, Mary Grace Westman, also worked as a secretary at the grade school — where the demented monster graduated from in 2017 — until retiring in 2021, according to a Facebook post by the church.

The unhinged assailant, who has no criminal history and was not known to police, also indicated that he knew the Annunciation shooting would culminate in his death and complained about apparent health issues. 

FBI Director Kash Patel confirmed the federal agency is treating the shooting as a hate crime and an act of domestic terrorism targeting Catholics.