Popular British YouTube vlogger Gavin Free, 29, and his American girlfriend Megan Turney, 30, were awoken in the early hours of 26 January to the sound of broken glass and somebody walking around their property.
Christopher Giles, described by police as “single, lonely and disturbed”, travelled for 11 hours from New Mexico to the couple’s home hundreds of miles away in Austin.
The 23-year-old had more than a thousand notes on his phone about the YouTube personalities, which police say contained “threatening thoughts” about Mr Free.
“I want Gavin Free to die alone, with no children,” said one note.
“Based on the footage seen, it was apparent that Giles’ sole intent was to cause harm to someone who resides there,” continued the detective.
Giles then fired his gun, with a police officer returning fire. It is still unclear if he died from police gunfire or a self-inflicted wound.
Oxfordshire-born Free is one half of The Slow Mo Guys, a YouTube channel featuring slow motion videos of scientific experiments and stunts which has more than ten million subscribers.
Police added Giles was an “avid player of video games and was known for watching YouTube videos that were centered on his hobby”.
Both YouTubers thanked police for their quick response to the incident and fans for their messages of support.
“I just wanted to say thanks for all the support and concern regarding the recent incident,” wrote Free. “It’s been a rough time for Meg and myself the last few weeks but we are doing OK. I want to give a huge thanks to @Austin_Police for the amazing response time.”
He added: “We’re going to beef up our security, we’re getting armed security. We’re increasing the cameras around our house, we’re doubling it basically, so we’re going to have 40 cameras around the property.”
Last year, PewDiePie, one of the world’s biggest YouTube stars, urged fans to stop visiting his Brighton home citing privacy concerns.