The mysteries continue to pile up when it comes to Stephen Paddock, the man who slaughtered over 50 people in Las Vegas earlier this month.

Authorities still have no motive and it seems that everything new that pops up brings more questions. ABC News has reported that Paddock’s laptop does not have its hard drive, meaning the authorities don’t have access to a possible direction to a motive.

Also, authorities in Los Angeles arrested his brother Bruce on child porn charges.

Hard Drive

From ABC News:

Paddock is believed to have removed the hard drive before fatally shooting himself, and the missing device has not yet been recovered, sources told ABC News.

Investigators digging into Paddock’s background also learned he purchased software designed to erase files from a hard drive, but without the hard drive to examine it is impossible to know if he ever used the software, one source said.

The absence of substantial digital clues has left investigators struggling to piece together what triggered Paddock to kill 58 innocent concertgoers and injure more than 500 others on Oct. 1.

Authorities are examining every aspect of Paddock’s life — from his family, friends and associates to his travel patterns, health and finances. So far, a motive has been elusive to investigators.

So if he removed the hard drive before he killed himself, shouldn’t it be in the room? I guess he could have thrown it out the window? Or maybe he removed it before he went to the hotel? But then again why bring the laptop, which is rendered useless without the hard drive.

Without the hard drive, authorities have lost a valuable piece of possible evidence that could have contained a manifesto or give clues to why Paddock committed this horrible crime.

UPROXX noted that Paddock is not the only mass murderer who went out of his way to clear his digital trail:

Paddock isn’t the only mass shooter in the past few years to pull such a tactic. Virginia Tech shooter Cho Seung Hui, Northern Illinois shooter Steven Kazmierczak, and Sandy Hook shooter Adam Lanza were all careful to destroy digital evidence, including SIM cards, computer hard drives, cell phones, and laptops. Of the three, only Lanza’s laptop had any recoverable evidence.

The Daily Mail reported that the FBI retrieved a few documents on the computer, “including articles ‘advocating for pedophiles’ rights,’ according to documents released this week.”

Brother Arrested on Child Porn Charges

That last tidbit is especially interesting now since authorities arrested his brother Bruce Paddock at an assisted living facility in North Hollywood for possession of child pornography.

This investigation began months before Stephen killed the 58 people in Las Vegas. From FOX 11:

According to the LAPD, the investigation began “after evidence was discovered inside a business located in the 9000 block of San Fernando Road in Sun Valley.”

“Paddock had been squatting inside the business and after his eviction, the evidence was discovered,” an LAPD statement says. “At the time of the initial investigation, Paddock was a transient and could not be located.”

He was found this morning at the Laurel Canyon Boulevard address and arrested by a task force that also included the FBI.

According to USA Today, prosecutors in Los Angeles County filed a complaint that “lists 19 counts of child exploitation of a child and one count of possession of child pornography.” The complaint dates the charges from January to August of 2014 and alleges that “Paddock had more than 600 photos depicting youths under age 18 engaging in or simulating sexual activity” and “[A]t least 10 of the images depicted youths under age 12.”