One of the activists, Win Naing, confirmed their release to VOA 's Burmese Service. Win Naing said he was forced to sign a statement acknowledging that he could face possible life imprisonment if he spoke out again.
On Thursday, Win Naing and Htin Kyaw held a news conference criticizing Burma's lack of political freedom and poor living conditions.
Htin Kyaw was previously arrested on two other occasions in connection with a protest in downtown Rangoon last month that focused on similar issues.
He was just released Wednesday.
Burma has little tolerance for political dissent, and the military government currently holds at least 1,100political prisoners.