The U.S. government created a service similar to Twitter in Cuba in a "discreet" operation intended to promote democracy on the communist-ruled island, officials said Thursday, but denied that the $1.2 million effort was aimed at fomenting unrest.

The program, whose existence was first reported by the Associated Press, was run by the U.S. Agency for International Development, which normally delivers aid to the world's poor, and was discontinued in 2012, officials said.

State Department spokeswoman Marie Harf said the program was neither "secret" nor "covert" under the U.S. government's definitions of those terms. "Discreet does not equal covert," Harf told a news briefing.