A teenage boy killed his parents and younger sister and posted gruesome pics of the bloodshed on social media

A teenage boy killed his parents and younger sister and posted gruesome pics of the bloodshed on social media - before turning the gun on two family dogs and then himself as cops arrived.

The names of the victims that 15-year-old William Quince Colburn III slaughtered before turning the gun on himself were identified as: William Colburn Jr., 63, Jana Colburn, (who turned 53 on the day she was reportedly killed), and Emma Colburn, 13.

Authorities say 15-year-old William Quince Colburn III posted the gruesome images of his dead family members, made threats to attack a school and then took his own life on Thursday.

RV SLAUGHTER

“The officers heard a single gunshot and the thud of a person falling to the ground,” according to the Texas Aransas Pass Police Department on what’s being classified as a triple murder-suicide that occurred at around 11pm on Wednesday.

The release continued: “Entry was made into the RV and immediately discovered the graphic scene shared over social media.”

Authorities are still trying to understand the motive and how so much bloodshed could be caused by the young teenage boy.

Authorities moved in on William’s RV home located at the Aransas Oaks RV Resort on S. Commercial Drive in Ingleside, Texas.

Upon entry after the lone gunshot, officers and deputies found the family, the dead dogs and the teenage boy, all dead.

William “conveyed graphic images of dead individuals who he identified as his family who he had killed” on a social media platform.

Police confirmed that William further “threatened to continue violence at an area school” on Thursday morning.

The homeschooled teen didn’t specify which school he planned to target, according to the Corpus Christi Caller-Times.

'MOURNING ALL FOUR'

Mahria Martin Batts, daughter of Jana Colburn, established a crowdfunding page as they grieve the loss of her loving kin.

“This Morning, we all woke up excited to tell our Mother a Happy 53rd Birthday,” the GoFundMe that’s raised more than $10,000 post reads.

“Instead, we were devastated with news that has broken us to our core.”

The family confessed they were simply unable to explain how and they this happened.

“We are hurt,” they continued.

“We do not understand. We are lost. We are angry.

“We are asking that you please understand that no matter what the events are that came to pass, that we are still mourning all 4.”

The local school district shared their support for the loss and confirmed William wasn't an enrolled student.

“The individual in this case was not enrolled at APISD and the APPD believes that there is no threat to any of our campuses,” Aransas Pass ISD stated in a release.

It added: "Our hearts go out to the family that has suffered a tragic loss of several family members in our community late this past evening.”

The case was still boggling local authorities.

San Patricio County Sheriff Oscar Rivera shared how stumped he and fellow authorities are.

"Our investigation continues on this sad tragedy and of course we have so many unanswered questions we are trying to find answers," he wrote after releasing the names of the four who were slaughtered in the RV.