A secret security system believed to have captured Michael Jackson’s final moments is among crucial evidence missing from the house where the singer died last month.

“It was a very sophisticated and high-tech surveillance and security system,” a LAPD source said speaking to The National Enquirer. “Not only were there cameras outside the house, but there were cameras inside as well – in private locations.”

The video evidence was allegedly removed before investigators obtained their first search warrant, according to authorities.

“Insiders close to the investigation say Michael’s death – possibly his murder – was captured on camera, but the video has not been recovered.”

TMZ.com is reporting that police are now classifying Jackson’s death as a homicide.