ATLANTA (CBS46) -- In an open letter posted on Twitter late Thursday, Mayor Keisha Lance Bottoms announced she will not seek re-election.
Mayor Bottoms is expected to make a formal announcement Friday at a 10 a.m. news conference.
In her letter and accompanying video, Mayor Bottoms wrote of her family's century of living in Atlanta and her love for the city. She looked back on the tribulations she faced in office and listed her accomplishments.
She then wrote of the decision she made with her husband:
"As Derek and I have given thoughtful prayer and consideration to the season now before us, it is with deep emotions that I hold my head high, and choose not to seek another term as Mayor."
Bottoms' term ends at the end of the year.
Atlanta City Council President Felicia Moore and attorney Sharon Gay had already announced their candidacy for mayor. It's unclear who else might throw their hat into the ring.
CBS46 spoke with political analyst Rashad Richey who said rising crime rates in the city could have led to Bottoms' decision.
"If she was running, she would go into this election severely wounded," said Richey, "And I’m not sure if she wanted to take that on.”
Richey said he expects the flood gates to open for potential candidates, including Atlanta City Council members Antonio Brown, Amir R. Farokhi and Andre Dickens.
CBS46 plans to carry Bottoms' press conference live on CBS46 starting at 10 a.m. and online at CBS46.com.