The prosecutor in Atlanta investigating whether then-President Donald Trump and his allies illegally meddled in the 2020 election in Georgia said Monday she expects to announce charging decisions in the case this summer and urged “heightened security.”

Fulton County District Attorney Fani Willis wrote in a letter to county Sheriff Pat Labat that she expects to announce the decisions sometime between July 11 and Sept. 1. She said she wanted to give Labat time to coordinate with local, state and federal agencies “to ensure that our law enforcement community is ready to protect the public.”

“Open-source intelligence has indicated the announcement of decisions in this case may provoke a significant public reaction,” Willis wrote in the letter, adding that some could involve “acts of violence that will endanger the safety of our community.”

As leaders, they need to be prepared, she wrote, adding that her team would be in touch to talk about arrangements.

The letter was first reported by The Atlanta Journal-Constitution, which reported that letters were also sent to Atlanta's police chief and the head of the Atlanta-Fulton County Emergency Management Agency.

The Atlanta Police Department confirmed receipt of a letter from Willis and said it would “continue to monitor the potential for unrest throughout our city.”

“We stand ready to respond to demonstrations to ensure the safety of those in our communities and those exercising their First Amendment right, or to address illegal activity, should the need arise,” a department statement said.