Police are searching for whoever is stealing donation boxes from the counters at Florida McDonald’s restaurants, investigators said.>> Read more trending newsSeveral Tampa Bay area law enforcement agencies are investigating after a man has stolen seven donation boxes (and attempted to rob an eighth), supporting the Ronald McDonald House, which provides housing for families with children undergoing cancer treatment.“The thief who is doing this is not stealing from McDonald’s,” Dustin Portillo of Caspars Company, which owns 60 McDonald’s restaurants, told WTVT. “He’s stealing from a 9-year-old kid who is going through leukemia treatment.”The suspect arrives on a red motorcycle and uses a pair of boltcutters he keeps in a black backpack to remove the lock before leaving with the donation box hidden beneath his red jacket, video shows.The thefts have occurred in Hillsborough, Pasco and Polk counties. We are asking for the public’s assistance in identifying this man. On June…