Law Was Respoding to MULTIPLE Reports of Suspicious Activity -Trump Assassination Press Conference

WTF. At the Trump assassination press conference, they are now saying that law enforcement was responding to MULTIPLE reports of suspicious activity.
Several suspicious occurrences allegedly happened outside of just the shooter on the roof.
They address the fact that people were telling law enforcement that there was a man on the roof and saying he was outside of the secure area.
Were there multiple people involved? What does this even mean?
They have not officially released the name of the shooter to the press.

https://x.com/Ultrafrog17/status/1812339070489550913