The money was from a publisher working with Daniels on a book deal.
A lawyer for the family said the boy was at a carnival with his sister and friends when a security guard falsely accused him of stealing. Police said officers followed protocol.
Originally developed for the military, sound cannons are now used by many police departments.
The probe's findings come more than three months after the scandal broke when the page surfaced online on a conservative news site — leading to calls for Northam's resignation.
"These cases, although not directly related at this time, do have some similarities the public needs to be aware of," Maj. Vincent Weddington said Tuesday.