Las Vegas, NV – Investigators are looking into two pieces of evidence which suggest that another person may have been with Las Vegas shooter prior to the shooting event.

NBC News reports that law enforcement officials told them that they found a charger in Paddock’s room which did not match any of his cell phones.

Investigators are also looking into garage records which show that one of Paddock’s hotel key cards was used during a time when Paddock’s car was gone from the hotel garage.

There are explanations which could account for these things without a second person being involved, and investigators are examining those possibilities.

While investigators are looking into the possibility that Paddock received help from a second person, Undersheriff Kevin McMahill said on Friday that there was not a second shooter in Paddock’s room.

“We’re very confident that there was not another shooter in that room.” Undersheriff McMahill said. “What I cannot confirm to you today, and what we continue to investigate is whether anybody else may have known about this incident before he carried it out.”

Earlier in the week, Sheriff Lombardo suggested that Paddock had help somewhere along the way, even if it was not during the actual attack.

“Stephen Paddock is a man who spent decades acquiring weapons and ammo and lived a secret life, much of which will never be fully understood,” Sheriff Lombardo said, according to the New York Post. “He meticulously planned the worst domestic attack in United States history.”

“Because look at this, you look at the weapon obtaining the different amounts of Tannerite (explosives) available, do you think this was all accomplished on his own?” he said. “You got to make the assumption he had to have help some help at some point.”

FBI Special Agent Aaron Ruse played down Sheriff Lombardo’s comments about others being involved in the shooting, according to The Guardian.

“Theories are great and everyone can have a theory,” said Rouse, who runs the bureau’s Las Vegas division. “But I need to deal with facts. The sheriff needs to deal with facts. He’s not going to make assumptions. I’m not going to make assumptions.”

Paddock’s girlfriend Marilou Danley was interviewed Wednesday by the FBI and the Las Vegas police, according to CNN. She said she didn’t know anything about the attack.

“It never occurred to me in any way whatsoever that he was planning violence against anyone,” she said in the statement.

Police said that Paddock bought her a plane ticket for her to fly to the Philippines and visit her family.

Danley reportedly was in the Philippines during the shooting and said she thought that Paddock sending her away may have been a way for him to end their relationship.

Officer Charleston Hartfield was murdered in the Las Vegas shooting. Before he was killed, he wrote a book,, ‘Memoirs of a Public Servant‘, which has received positive reviews.  Let’s see if we can make it a #1 best-seller and help support his family.