FACT CHECK: Feds say Trump tweet misstates how FBI works

Trump tied the Parkland school massacre to FBI's Russia probe.

Federal law enforcement officials say Trump’s posting misstates how the FBI actually works.

There are about 35,000 people working for the FBI, including about 12,000 agents, according to FBI statistics.

The FBI has “a lot of people,” one federal law enforcement official told ABC News. “They’re not all working on Russia, I can tell you that. There’s a lot of other stuff going on.”

On Wednesday, 19-year-old Nikolas Cruz opened fire inside Stoneman Douglas High School in Parkland, Fla., killing 17 people and injuring many others. Two days later, the FBI acknowledged that last month, “a person close to Nicolas Cruz” contacted an FBI tip line “to report concerns about him,” but “protocols were not followed” and the information was never passed on to authorities in Florida.

When the FBI receives a call like that from the public, the call goes to a center in West Virginia run by the FBI's Criminal Justice Information Services Division. The call center is supposed to assess the information, and if it is deemed a potential threat the information should be sent to the appropriate FBI field office. In the Cruz case, the information should have been deemed a potential threat to life and should have been sent to the Miami field office for further investigation, but the information was never deemed a threat to begin with, so it was never passed on, the federal law enforcement official said.

Nevertheless, personnel at the FBI’s call center would “absolutely not” ever be working on the Russia case, the official said.