As Americans begin to pick up the pieces from Sunday’s mass shooting in Las Vegas, new details are emerging in connection to Stephen Paddock’s financial activities. A new report by ABC News says over 200 reports of suspicious activities were made to authorities.

ABC News reports:

As authorities pick apart the life of Las Vegas shooter Stephen Paddock, they have come across one major thread of suspicious behavior: how he handled his money.

Paddock’s recent financial transactions have become a key focus for investigators looking to learn more about the Nevada man and why he launched the deadliest mass shooting in modern U.S. history.

As ABC News first reported Monday, Paddock recently sent tens of thousands of dollars to someone in the Philippines, where his girlfriend was at the time of the attack, and authorities are still trying to determine who received that money, sources familiar with the matter said.

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In the last three years alone, more than 200 reports about Paddock’s activities, particularly large transactions at casinos, have been filed with law enforcement authorities, ABC News was told.

While some of the reports centered around “suspicious activity,” many were “currency transaction reports,” which casinos are required to file with the Treasury Department when a person withdraws or deposits more than $10,000 in cash.