Cing'ta was a Federation informant assigned to infiltrate the Maquis.
In 2373, he was supposed to meet with Captain Benjamin Sisko on Marva IV with information he obtained on Michael Eddington. Prior to the meeting, the Maquis learned that he was an informant, and they marooned him on an inhospitable planet in the Badlands. (DS9: "For the Uniform")